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| Publications of Gregory R. Lockhead :chronological alphabetical combined listing:%% Journal Articles @article{fds43733, Author = {Needham, A and Dueker, G and Lockhead, G.}, Title = {Infants’ formation and use of categories to segregate objects. Cognition, 94, 215-240..}, Year = {2005}, Key = {fds43733} } @article{fds340639, Author = {Lockhead, GR}, Title = {Absolute judgments are relative: A reinterpretation of some psychophysical ideas}, Journal = {Review of General Psychology}, Volume = {8}, Number = {4}, Pages = {265-272}, Publisher = {American Psychological Association (APA)}, Year = {2004}, Month = {January}, url = {http://dx.doi.org/10.1037/1089-2680.8.4.265}, Abstract = {A central theoretical assumption in classical psychophysics is that people judge the intensities of stimulus elements; for example, observers directly report the loudness of a tone or the intensity of a shock. A methodological assumption in classical psychophysics is that averaged data demonstrate this theoretical view. It is shown in this article that both assumptions are wrong and that the psychophysical laws of Weber, Fechner, and Stevens are not general. Rather, psychophysical judgments are made in relation to contexts and memories, measures of which provide new information about psychophysical judgments and new understandings of channel capacity, the local-global distinction, and the source of noise in signal detection theory.}, Doi = {10.1037/1089-2680.8.4.265}, Key = {fds340639} } @article{fds340640, Author = {Huettel, SA and Lockhead, G}, Title = {Variability is not uniformily bad: The practices of psychologists generate research questions}, Journal = {Behavioral and Brain Sciences}, Volume = {24}, Number = {3}, Pages = {418-419}, Year = {2001}, Month = {January}, url = {http://dx.doi.org/10.1017/s0140525x01394141}, Abstract = {The practices of economists increase experimental reproducibility relative to those of selected psychologists but should not be universally adopted. Procedures criticized by Hertwig and Ortmann as producing variable data are valuable, instead, for generating questions. The procedure of choice should depend on the theoretical goal: measure a known factor or learn what factors are important and need to be measured.}, Doi = {10.1017/s0140525x01394141}, Key = {fds340640} } @article{fds340641, Author = {Huettel, SA and Lockhead, G}, Title = {Psychologically rational choice: Selection between alternatives in a multiple-equilibrium game}, Journal = {Cognitive Systems Research}, Volume = {1}, Number = {3}, Pages = {143-160}, Publisher = {Elsevier BV}, Year = {2000}, Month = {January}, url = {http://dx.doi.org/10.1016/S1389-0417(00)00006-1}, Abstract = {Choice is modeled by game theory through analyses of the structure of a game situation. However, at least some choices, such as those in games that have more than one rational solution, are difficult to address under standard game theory. We investigated choice in a simple multiple-equilibrium game, Wolf's Dilemma, and found that choice depends on both structural components of the game, such as the number of opponents, and non-structural components, such as judgments about opponents' likely choices. Significant effects of trial-to-trial sequence were identified. We conclude that game theoretic methods cannot deal with multiple and equilibrium games in the absence of a psychological understanding of choice, and that psychological measures are required to predict performance in such games. © 2000 Elsevier Science B.V. All rights reserved.}, Doi = {10.1016/S1389-0417(00)00006-1}, Key = {fds340641} } @article{fds252724, Author = {Huettel, SA and Lockhead, GR}, Title = {Range effects of an irrelevant dimension on classification.}, Journal = {Perception & psychophysics}, Volume = {61}, Number = {8}, Pages = {1624-1645}, Year = {1999}, Month = {November}, ISSN = {0031-5117}, url = {http://www.ncbi.nlm.nih.gov/pubmed/10598475}, Abstract = {In univariate classification tasks, subjects sort stimuli on the basis of the only attribute that varies. In orthogonal classification tasks, often called filtering tasks, there additionally are trial-to-trial variations in irrelevant attributes that the subjects are instructed to ignore. Performance is generally slower in filtering tasks than in univariate control tasks. We investigated this slowing in experiments of how the range of irrelevant trial-to-trial variation affects responses in pitch/loudness classification tasks. Using two levels of pitch and of loudness as stimuli, Experiment 1 replicated prior work showing that responses are slowed more when the range of the irrelevant dimension is made larger. Also in Experiment 1, sequential analyses showed that response time depends both on sequence and on the stimulus set independent of sequence. Experiments 2 and 3 used several levels on the irrelevant dimension and showed that responses to categorize loudness are slowed more by larger trial-to-trial pitch differences, but only on trials when the response repeats. When the response changes, performance is essentially unaffected by trial-to-trial irrelevant variation. This interaction supports the conclusion that slowed average performance in orthogonal classification tasks, which is known as Garner interference, is not due to difficulties that subjects have in filtering stimulus attributes. It is due to how subjects process successive stimulus differences. We call for more frequent reports of sequential analyses, because these can reveal information that is not available from data averages.}, Doi = {10.3758/bf03213123}, Key = {fds252724} } @article{fds252723, Author = {Lockhead, GR and Huettel, SA}, Title = {Isomorphisms and subjective colors}, Journal = {Behavioral and Brain Sciences}, Volume = {22}, Number = {6}, Pages = {959-960}, Publisher = {Cambridge University Press (CUP)}, Year = {1999}, Month = {January}, ISSN = {0140-525X}, url = {http://dx.doi.org/10.1017/S0140525X99392219}, Abstract = {Palmer describes a 'subjective barrier' that limits knowledge of others' experience. We discuss how this barrier extends to all knowledge, becoming less distinct as theoretical constructs are strengthened. We provide evidence for isomorphic experience, among individuals with similar physiologies, by showing that perceived relations between colors are as similar when viewing pigments as when viewing subjective colors caused by flickering bars.}, Doi = {10.1017/S0140525X99392219}, Key = {fds252723} } @article{fds252725, Author = {Dragoi, V and Lockhead, GR}, Title = {Context-Dependent Changes in Visual Sensitivity Induced by Muller-Lyer Stimuli}, Journal = {Vision Research}, Volume = {39}, Pages = {1657-1670}, Year = {1999}, Key = {fds252725} } @article{fds340642, Author = {Huettel, SA and Lockhead, GR}, Title = {A framework for structural constraints on feature creation}, Journal = {Behavioral and Brain Sciences}, Volume = {21}, Number = {1}, Pages = {29-29}, Publisher = {Cambridge University Press (CUP)}, Year = {1998}, Month = {February}, url = {http://dx.doi.org/10.1017/s0140525x98380103}, Abstract = {<jats:p>We address two major limitations of Schyns et al. First, we clarify their concept of “features” by postulating several levels for processing. The composition of the feature set at each level determines the set at the next higher level, following simple structural guidelines. Second, we show that our proposed framework reconciles feature-creation and fixed-feature approaches.</jats:p>}, Doi = {10.1017/s0140525x98380103}, Key = {fds340642} } @article{fds252693, Author = {Lockhead, G}, Title = {The bases for simple judgments are complex: Review of Sensation and Judgment by J.C. Baird}, Journal = {American Journal of Psychology}, Volume = {111}, Number = {2}, Pages = {296-303}, Year = {1998}, Key = {fds252693} } @article{fds340643, Author = {Lockhead, G and Dragoi, V and Wolbarsht, ML}, Title = {The micfogenesis of geometrical illusions: contextdependent changes in visiual sensitivity and the muller-lyer effect}, Journal = {Investigative Ophthalmology and Visual Science}, Volume = {38}, Number = {4}, Pages = {S643}, Year = {1997}, Month = {December}, Abstract = {Purpose, We analyze the influence of visual contexts which resemble the Muller-Lyer configuration on the detectability of a target stimulus. Methods. Six adult subjects were instructed to detect the occurrence of a target while the target and the context were briefly flashed periodically. During each trial the target was presented alone, in conjunction with the context, or neither target nor context were presented. The target occurred randomly at one of four contrasts; the context (outward or inward arrowhead) was always presented at high contrast. We measured the detection ratio (denned as proportion correct detections) for all four target contrasts in the following conditions: (a) target alone; (b) target and outward arrowhead; (c) target and inward arrowhead. We varied the angle between the arrowhead fins and the distance between the arrowhead and the target. Results. Target detection is facilitated by the inward arrowhead and suppressed by the outward arrowhead. The amount of facilitation and suppression increases monotonically with the decrease in arrowhead angie, but it diminishes as target contrast increases. When the distance between target and context increases, both inhibitory and excitatory effects diminish drastically in strength. If distance is further increased the influence of the outward arrowhead changes from suppression to facilitation. The inhibitory and excitatory effects are amplified if a symmetric arrowhead is added on the other end of the target. All observed variations in detection ratio match qualitatively the lesults obtained with the Mulier-Lyer illusion, in which a bar appears long or short when it is flanked by inward or outward arrowheads. Conclusions, (a) Previous results (e.g., Kapadia et al., 1995; Polat and Sagi, 1994) reported facilitory effects of the surround. We found that as a function of surround orientation and spatial offset there is a continuum of surround modulations ranging from strong inhibition to strong excitation; (b) Our findings are consistent with short and long-range receptive field interactions in primary visual cortex and suggest a physiological basis for surround modulation; (c) The Muller-Lyer extent illlusion is correlated with target detectability. We suggest that detectability and perceived extent are caused by the same mechanism.}, Key = {fds340643} } @article{fds252694, Author = {Lockhead, GR and Dragoi, V and Wolbarsht, M}, Title = {The Microgenesis of Geometrical Illusions: Context-Dependent Changes in Visual Sensitivity and the Muller-Lyer Effect}, Journal = {Investigative Ophthalmology & Visual Science}, Volume = {38}, Number = {S643}, Year = {1997}, Key = {fds252694} } @article{fds29563, Author = {Lockhead, G.R. and Dragoi, V. and Huettel, S.}, Title = {Context and Judgment}, Journal = {Fechner Day 96, Padua, Italy}, Pages = {149-154}, Year = {1996}, Key = {fds29563} } @article{fds252695, Author = {Lockhead, G}, Title = {Psycholphysical scaling methods reveal and measure context effects}, Journal = {Behavioral and Brain Sciences}, Volume = {18}, Pages = {601-612}, Year = {1995}, Key = {fds252695} } @article{fds252696, Author = {Lockhead, G}, Title = {Psychological measures of objects and their features: It is time for a change}, Journal = {Behavioral and Brain Sciences}, Volume = {17}, Number = {4}, Pages = {757-772}, Publisher = {Cambridge University Press}, Year = {1994}, Key = {fds252696} } @article{fds340647, Author = {LOCKHEAD, GR}, Title = {IT IS TIME FOR A CHANGE - AUTHORS RESPONSE}, Journal = {BEHAVIORAL AND BRAIN SCIENCES}, Volume = {17}, Number = {4}, Pages = {766-771}, Publisher = {Cambridge University Press (CUP)}, Year = {1994}, url = {http://dx.doi.org/10.1017/S0140525X00037109}, Doi = {10.1017/S0140525X00037109}, Key = {fds340647} } @article{fds252697, Author = {Lockhead, GR}, Title = {A parallel view of the history of psychophysics}, Journal = {Behavioral and Brain Sciences}, Volume = {16}, Number = {1}, Pages = {154-155}, Publisher = {Cambridge University Press (CUP)}, Year = {1993}, Month = {March}, ISSN = {0140-525X}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1993KU41400079&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Doi = {10.1017/s0140525x00029423}, Key = {fds252697} } @article{fds252699, Author = {Lockhead, GR}, Title = {Psychophysical scaling: Judgments of attributes or objects?}, Journal = {The Behavioral and brain sciences}, Volume = {15}, Number = {3}, Pages = {543-558}, Year = {1992}, Month = {September}, ISSN = {0140-525X}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1992JN07000047&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {Psychophysical scaling models of the form R = f(I), with R the response and I some intensity of an attribute, all assume that people judge the amounts of an attribute. With simple biases excepted, most also assume that judgments are independent of space, time, and features of the situation other than the one being judged. Many data support these ideas: Magnitude estimations of brightness (R) increase with luminance (I). Nevertheless, I argue that the general model is wrong. The stabilized retinal image literature shows that nothing is seen if light does not change over time. The classification literature shows that dimensions often combine to produce emergent properties that cannot be described by the elements in the stimulus. These and other effects cannot be adjusted for by simply adding variables to the general model because some factors do not combine linearly. The proposed alternative is that people initially judge the entire stimulus - the object in terms of its environment. This agrees with the constancy literature that shows that objects and their attributes are identified through their relations to other aspects of the scene. That the environment determines judgments is masked in scaling studies where the standard procedure is to hold context constant. In a typical brightness study (where different lights are presented on the same background on different trials) the essential stimulus might be the intensity of the light or a difference between the light and the background. The two are perfectly confounded. This issue is examined in the case of audition. Judgments of the loudness of a tone depend on how much that tone differs from the previous tone in both pitch and loudness. To judge loudness (and other attributes) people first seem to process the stimulus object in terms of differences between it and other aspects in the situation; only then do they assess the feature of interest. Psychophysical judgments will therefore be better interpreted by theories of attention that are based in biology or psychology than those (following Fechner) that are based in classical physics.}, Doi = {10.1017/s0140525x00069934}, Key = {fds252699} } @article{fds252698, Author = {Lockhead, G}, Title = {Constancy in a changing world}, Journal = {Behavioral & Brain Sciences}, Volume = {15}, Number = {3}, Pages = {587-601}, Publisher = {Cambridge University Press (CUP)}, Year = {1992}, url = {http://dx.doi.org/10.1017/S0140525X00070242}, Doi = {10.1017/S0140525X00070242}, Key = {fds252698} } @article{fds252700, Author = {Lockhead, GR and Wolbarsht, ML}, Title = {Toying with the moon illusion.}, Journal = {Applied optics}, Volume = {30}, Number = {24}, Pages = {3504-3507}, Year = {1991}, Month = {August}, ISSN = {0003-6935}, url = {http://www.ncbi.nlm.nih.gov/pubmed/20706418}, Abstract = {We propose that the correct interpretation of the moon illusion is that the zenith moon appears small, not that the horizon moon appears large. This illusion is caused by the visual gap between the observer and the overhead moon. Because of the gap, the observer has no or little optical information about the distance of the moon. This results in empty field myopia where the moon is neurally, although not necessarily cognitively, processed as being at about arm's length. When the moon is seen on the horizon, there usually is optical information about distance. That results in reduced accommodation, and so the moon is processed as at a greater distance. Consistent with the size-distance-invariance hypothesis, the moon is then judged as large. This is a specific example of the more general fact that all distant objects appear small in the absence of a stimulus for accommodation to be distant. This outcome produces the toy illusion.}, Doi = {10.1364/ao.30.003504}, Key = {fds252700} } @article{fds252701, Author = {Allan, LG and Siegel, S and Toppan, P and Lockhead, GR}, Title = {Assessment of the McCollough effect by a shift in psychometric function}, Journal = {Bulletin of the Psychonomic Society}, Volume = {29}, Number = {1}, Pages = {21-24}, Publisher = {Springer Nature}, Year = {1991}, Month = {January}, ISSN = {0090-5054}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1991EV51900008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {Following adaptation to chromatic grids, we assessed the orientation-contingent color aftereffect with a new procedure—a shift in the psychometric function from the preadaptation level. With this procedure, the conditions that did and did not induce the aftereffect were the same as those previously reported with other measurement procedures. The psychometric function shift provides a new, simple, and objective technique for evaluation of illusory color. © 1991, The Psychonomic Society, Inc.. All rights reserved.}, Doi = {10.3758/BF03334757}, Key = {fds252701} } @article{fds29565, Title = {Fechner Day '91}, Journal = {International Society for Psychophysics, Cassis, France}, Pages = {237}, Editor = {Lockhead, G.R.}, Year = {1991}, Key = {fds29565} } @article{fds29564, Title = {The Perception of Structure}, Journal = {American Psychological Association, Washington, D.C.}, Pages = {338}, Editor = {Lockhead, G.R. and Pomerantz, J.}, Year = {1991}, Key = {fds29564} } @article{fds252702, Author = {Seaber, J and Lockhead, GR}, Title = {McCullough aftereffects in strabismus and amblyopia}, Journal = {Vision Research}, Volume = {29}, Pages = {609-617}, Year = {1989}, Key = {fds252702} } @article{fds29566, Author = {G. Lockhead}, Title = {An alternative to the neural attention hypothesis for auditory psychophysics}, Journal = {Fechner Day '88, Stirling, Scotland: International Society for Psychophysics}, Pages = {101-102}, Year = {1988}, Key = {fds29566} } @article{fds252703, Author = {Lockhead, G}, Title = {Modeling temporal and spatial differences}, Journal = {The Behavioral and Brain Sciences}, Volume = {11}, Number = {2}, Pages = {302-303}, Publisher = {Cambridge University Press (CUP)}, Year = {1988}, url = {http://dx.doi.org/10.1017/S0140525X00050044}, Doi = {10.1017/S0140525X00050044}, Key = {fds252703} } @article{fds252704, Author = {Lockhead, GR and King, M}, Title = {Assimilation and contrast: Two processes or one?}, Journal = {New Ideas in Psychology}, Volume = {6}, Pages = {293-299}, Year = {1988}, Key = {fds252704} } @article{fds252705, Author = {Seaber, JH and Fisher, B and Lockhead, GR and Wolbarsht, ML}, Title = {Incidence and characteristics of McCollough aftereffects following video display terminal use.}, Journal = {J Occup Med}, Volume = {29}, Number = {9}, Pages = {727-729}, Year = {1987}, Month = {September}, ISSN = {0096-1736}, url = {http://www.ncbi.nlm.nih.gov/pubmed/3681504}, Abstract = {After using video display terminals (VDT), some persons notice that achromatic patterns appear faintly colored hours after terminal use. We investigated the incidence of this effect, the McCollough effect (ME), among 125 VDT users. Subjects completed a questionnaire regarding work habits and certain life-style aspects. They were shown photographs of varying spatial frequencies to identify the adapting stimulus responsible for the ME. The incidence of ME after routine use of VDTs was 19.1%. The adapting stimulus was the repeating character lines of the VDT. No aspect of life-style investigated appeared to predispose an individual to develop the ME. Those subjects who developed the ME did not differ from those who did not in age, sleep, caffeine consumption, use of medication, refractive errors, or computer usage, nor did they have a higher incidence of ocular defects or eye strain.}, Key = {fds252705} } @article{fds252707, Author = {Hinson, JM and Lockhead, GR}, Title = {Momentary and global maximizing.}, Journal = {Behavioural processes}, Volume = {14}, Number = {1}, Pages = {21-34}, Year = {1987}, Month = {February}, ISSN = {0376-6357}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1987G749900003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {Four adult females responded at a computer console, on three constant probability concurrent variable-interval reinforcement schedules. The subjects were instructed to try to obtain as many reinforcers as possible, but were not given any instructions on how to accomplish this task. Three of the four subjects typically allocated responses to the schedule offering the higher reinforcement probability. These results show that some subjects trying to maximize overall reinforcement may respond in accordance with a momentary maximizing strategy.}, Doi = {10.1016/0376-6357(87)90064-7}, Key = {fds252707} } @article{fds252706, Author = {Wallace, WT and Lockhead, GR}, Title = {Brightness of luminance distributions with gradual changes.}, Journal = {Vision research}, Volume = {27}, Number = {9}, Pages = {1589-1601}, Year = {1987}, Month = {January}, ISSN = {0042-6989}, url = {http://www.ncbi.nlm.nih.gov/pubmed/3445491}, Abstract = {The perception of gradually changing luminance distributions was investigated. Luminance changed across the radius of a disk by a linear, quadratic, or cubic function with varying magnitudes. Subjects selected matching luminances for the inner and outer edges of each stimulus. The threshold for reporting that the inner and outer matches were different occurred at approximately 20% contrast between those regions. This threshold did not vary with the particular function which described the luminance distribution. Further, as the magnitude of luminance change across the stimulus increased, subjects judged the inner and outer edges to differ more in brightness. Matching luminances also depended upon the background configuration with greater differences perceived across the disk radius when the surround and center dot of the stimulus were of opposite, rather than the same, luminance. These results indicate that models of brightness must consider all luminance changes in the stimulus, not just changes of a particular type such as second differences or changes at a luminance step.}, Doi = {10.1016/0042-6989(87)90167-2}, Key = {fds252706} } @article{fds252664, Author = {Lockhead, G}, Title = {Category thresholds}, Journal = {Fechner Day, Northampton, MA: International Society for Psychophysics}, Pages = {23-28}, Year = {1987}, Key = {fds252664} } @article{fds252708, Author = {Lockhead, GR and Hinson, J}, Title = {Range and sequence effects in judgment.}, Journal = {Perception & psychophysics}, Volume = {40}, Number = {1}, Pages = {53-61}, Year = {1986}, Month = {July}, ISSN = {0031-5117}, url = {http://www.ncbi.nlm.nih.gov/pubmed/3748766}, Doi = {10.3758/bf03207594}, Key = {fds252708} } @article{fds252709, Author = {Hinson, J and Lockhead, GR}, Title = {Range effects in successive discrimination procedures}, Journal = {Journal of Experimental Psychology: Animal Behavior Processes}, Volume = {12}, Pages = {270-276}, Year = {1986}, Key = {fds252709} } @article{fds252710, Author = {Wolbarsht, ML and Lockhead, GR}, Title = {Moon illusion: a new perspective.}, Journal = {Applied optics}, Volume = {24}, Number = {12}, Pages = {1844}, Year = {1985}, Month = {June}, ISSN = {0003-6935}, url = {http://www.ncbi.nlm.nih.gov/pubmed/18223803}, Doi = {10.1364/ao.24.001844}, Key = {fds252710} } @article{fds252667, Author = {Bradow, F and Lockhead, GR and Bradow, R}, Title = {Implications of perception thresholds for soiling}, Journal = {Proceedings of the Air Pollution Control Association, 8.5}, Pages = {1-20}, Year = {1985}, Key = {fds252667} } @article{fds252713, Author = {Lockhead, GR and King, MC}, Title = {A memory model of sequential effects in scaling tasks.}, Journal = {Journal of experimental psychology. Human perception and performance}, Volume = {9}, Number = {3}, Pages = {461-473}, Year = {1983}, Month = {June}, ISSN = {0096-1523}, url = {http://www.ncbi.nlm.nih.gov/pubmed/6223983}, Abstract = {Subjects judge successive stimuli to be overly similar in psychophysical scaling tasks. This is called assimilation. They also tend to judge each stimulus as overly different from more previous events. This is called contrast. To examine a two-stage linear model of these sequence effects, we asked subjects to judge the relative intensity of successive tones. In support of the model, responses again depended lawfully on prior events. These memory effects occur in a variety of scaling tasks and are consistent with two assumptions: (a)Successive events assimilate in memory, and (b) subjects compare each stimulus to a collection of memories of prior events to generate a response. The trial-by-trial analysis used to test the model also showed that even in magnitude-estimation studies, equal stimulus ratios do not result in equal response ratios, except on average. This article suggests that examinations of trial-by-trial performance might be useful in studying memory and judgment processes.}, Doi = {10.1037//0096-1523.9.3.461}, Key = {fds252713} } @article{fds252711, Author = {Reed, SK and Hock, HS and Lockhead, GR}, Title = {Tacit knowledge and the effect of pattern configuration on mental scanning.}, Journal = {Memory & cognition}, Volume = {11}, Number = {2}, Pages = {137-143}, Year = {1983}, Month = {March}, ISSN = {0090-502X}, url = {http://www.ncbi.nlm.nih.gov/pubmed/6865747}, Doi = {10.3758/bf03213468}, Key = {fds252711} } @article{fds252666, Author = {Lockhead, G}, Title = {Biologic Analogues of Image Inhancement and the Dynamics of the Visual System}, Journal = {Technical Report to the Southeastern Center for Electrical Engineering Education}, Pages = {138}, Year = {1983}, Key = {fds252666} } @article{fds252712, Author = {Lockhead, G}, Title = {A word processor induced visual aftereffect}, Journal = {Human Factors Society Bulletin}, Volume = {26}, Pages = {2-7}, Year = {1983}, Key = {fds252712} } @article{fds252714, Author = {Lockhead, GR}, Title = {Practically perfect performance.}, Journal = {The Journal of the Acoustical Society of America}, Volume = {71}, Number = {3}, Pages = {755-756}, Year = {1982}, Month = {March}, ISSN = {0001-4966}, url = {http://www.ncbi.nlm.nih.gov/pubmed/7085976}, Doi = {10.1121/1.387501}, Key = {fds252714} } @article{fds252717, Author = {King, MC and Lockhead, GR}, Title = {Response scales and sequential effects in judgment.}, Journal = {Perception & psychophysics}, Volume = {30}, Number = {6}, Pages = {599-603}, Year = {1981}, Month = {December}, ISSN = {0031-5117}, url = {http://www.ncbi.nlm.nih.gov/pubmed/7335458}, Doi = {10.3758/bf03202016}, Key = {fds252717} } @article{fds252715, Author = {Lockhead, GR}, Title = {Context affects measures of sensory intensity}, Journal = {Behavioral and Brain Sciences}, Volume = {4}, Number = {2}, Pages = {196-197}, Publisher = {Cambridge University Press (CUP)}, Year = {1981}, Month = {January}, ISSN = {0140-525X}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1981LX52400011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Doi = {10.1017/S0140525X00008360}, Key = {fds252715} } @article{fds252716, Author = {Lockhead, GR and Byrd, R}, Title = {Practically perfect pitch}, Journal = {Journal of the Acoustical Society of America}, Volume = {70}, Number = {2}, Pages = {387-389}, Publisher = {Acoustical Society of America (ASA)}, Year = {1981}, Month = {January}, ISSN = {0001-4966}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1981MB22900011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {People who can identify piano notes with essentially no errors (perfect pitch) are much less capable in identifying musical notes produced by sine waves. Thus, frequency is not the only information these people use to identify musical notes; piano notes are complex waveforms or patterns, sine waves are not complex. Musically trained people who do not have perfect pitch ability have considerable difficulty identifying either sine waves or piano notes. As well as this quantitative difference, these two groups of musicians also differ qualitatively. The people in both groups are about equally able to judge octave levels, but people with perfect pitch are excellent in identifying the particular note, e.g., E, independent of its octave, while people without perfect pitch ability are not. © 1981, Acoustical Society of America. All rights reserved.}, Doi = {10.1121/1.386773}, Key = {fds252716} } @article{fds252719, Author = {Lockhead, GR and Crist, WB}, Title = {Making letters distinctive}, Journal = {Journal of Educational Psychology}, Volume = {72}, Number = {4}, Pages = {483-493}, Publisher = {American Psychological Association (APA)}, Year = {1980}, Month = {August}, ISSN = {0022-0663}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1980KD63800009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {Results of a study with 77 kindergartners, 24 1st graders, 21 2nd graders, and 6 college students show that small graphic changes made in normal letters of the alphabet changed the similarity relations among those letters. All Ss classified letters of this distinctive font faster and with fewer errors than they classified normal letters. It is shown that it is not features alone but relations between features within letters, and relations between letters in the stimulus set, that determine how difficult any particular letter is to classify. The advantage of the distinctive font is such that many children had less difficulty classifying distinctive letters into bins labeled with normal letters than doing the conceptually easier match-to-sample task of placing normal letters into bins labeled with normal letters. (22 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1980 American Psychological Association.}, Doi = {10.1037/0022-0663.72.4.483}, Key = {fds252719} } @article{fds252718, Author = {Lockhead, GR and Johnson, RC and Gold, FM}, Title = {Saltation through the blind spot.}, Journal = {Perception & psychophysics}, Volume = {27}, Number = {6}, Pages = {545-549}, Year = {1980}, Month = {June}, ISSN = {0031-5117}, url = {http://www.ncbi.nlm.nih.gov/pubmed/7393702}, Doi = {10.3758/bf03198683}, Key = {fds252718} } @article{fds252720, Author = {Gruenewald, PJ and Lockhead, GR}, Title = {The free recall of category examples}, Journal = {Journal of Experimental Psychology: Human Learning and Memory}, Volume = {6}, Number = {3}, Pages = {225-240}, Publisher = {American Psychological Association (APA)}, Year = {1980}, Month = {May}, ISSN = {0096-1515}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1980JQ97900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {24 undergraduates recalled the names of as many animals, birds, foods, or cold foods as they could in 15- or 30-min sessions. In each task, the rate of item production decreased with increasing time, and semantically related items were produced in spurts over time. Results are consistent with a proposed 2-stage model in which people (a) search for semantic fields and (b) produce whatever items are encountered when a field is located. It is proposed that time between clusters increases hyperbolically in these tasks, reflecting the search for semantic fields, and that the time between items within clusters, and the number of items in each cluster, are independent of time in the task, reflecting the production of items in discovered fields. On these bases an algorithm is introduced that partitions clusters by the temporal patterning between words in the protocols. The temporally-based algorithm provides a description of the data that highly correlates with the semantic structure as depicted by judges' ratings. These correlated temporal and semantic measures may reflect aspects of the search process and the structure of memory. (24 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1980 American Psychological Association.}, Doi = {10.1037/0278-7393.6.3.225}, Key = {fds252720} } @article{fds252721, Author = {Staddon, JER and King, M and Lockhead, GR}, Title = {On sequential effects in absolute judgments}, Journal = {Journal of Experimental Psychology: Human Perception and Performance}, Volume = {6}, Pages = {290-301}, Year = {1980}, Key = {fds252721} } @article{fds252668, Author = {Lockhead, GR}, Title = {Holistic versus analytic process models: a reply.}, Journal = {Journal of experimental psychology. Human perception and performance}, Volume = {5}, Number = {4}, Pages = {746-755}, Year = {1979}, Month = {November}, ISSN = {0096-1523}, url = {http://www.ncbi.nlm.nih.gov/pubmed/528971}, Abstract = {Two classes of stimulus process models are considered in this reply to Dykes and Cooper. It is shown that analytic models which assume that stimuli are initially processed in terms of constituent dimensions do not account for large amounts of published data. It is also shown that the holistic-discriminability model that Dykes and Cooper reject is nonetheless consistent with their results and predicts all of the data for which their analytic model was constructed to account.}, Doi = {10.1037//0096-1523.5.4.746}, Key = {fds252668} } @article{fds252669, Author = {King, MC and Crist, WB and Lockhead, GR}, Title = {Context and goodness in a focusing task}, Journal = {Perception & Psychophysics}, Volume = {26}, Number = {4}, Pages = {305-311}, Publisher = {Springer Nature}, Year = {1979}, Month = {July}, ISSN = {0031-5117}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1979HS08300007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {In a focusing task, people respond positively to one stimulus and negatively to all other stimuli that occur. The task has been called focusing in recognition of the possibility that only the target stimulus is relevant to performance, and that what people do is to focus on some aspect of the target, such as its configuration. The present study used eight patterns, and people focused on each pattern in eight different experimental conditions. The stimulus set was selected to have good patterns (according to symmetry, subjective goodness, and free classification measures) that were similar to each other (according to similarity judgments) and poor patterns that were dissimilar from one another and from the good patterns. The results were that the good patterns were difficult (speed and accuracy) to classify, and the poor patterns were easy. The similarity between the target pattern and the other patterns in the total set, i.e., the context of each focused stimulus, predicted performance. These results support the idea that similarity judgments measure relevant aspects of context and that the effects of context on performance should not be overlooked. © 1979 Psychonomic Society, Inc.}, Doi = {10.3758/BF03199885}, Key = {fds252669} } @article{fds252722, Author = {Lockhead, GR and Evans, NJ}, Title = {Emmert’s imaginal law}, Journal = {Bulletin of the Psychonomic Society}, Volume = {13}, Number = {2}, Pages = {114-116}, Publisher = {Springer Nature America, Inc}, Year = {1979}, Month = {January}, ISSN = {0090-5054}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1979HC52900019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {The apparent size of a visual afterimage increases in proportion with the distance at which that image is viewed; this is Emmert’s law. Contrary to Emmert’s law for afterimages, this paper reports that the apparent size of a mentally imaged object decreases monotonically with increases in the distance of the viewing surface. © 1979, The Psychonomic Society, Inc.. All rights reserved.}, Doi = {10.3758/BF03335030}, Key = {fds252722} } @article{fds252670, Author = {King, MC and Gruenewald, P and Lockhead, GR}, Title = {Classifying related stimuli.}, Journal = {Journal of Experimental Psychology: Human Learning and Memory}, Volume = {4}, Number = {5}, Pages = {417-427}, Publisher = {American Psychological Association (APA)}, Year = {1978}, Month = {September}, ISSN = {0096-1515}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1978FM54400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Doi = {10.1037/0278-7393.4.5.417}, Key = {fds252670} } @article{fds252671, Author = {Lockhead, GR and Gruenewald, P and King, M}, Title = {Holistic vs. attribute repetition effects in classifying stimuli.}, Journal = {Memory & cognition}, Volume = {6}, Number = {4}, Pages = {438-445}, Year = {1978}, Month = {July}, ISSN = {0090-502X}, url = {http://www.ncbi.nlm.nih.gov/pubmed/692368}, Doi = {10.3758/bf03197477}, Key = {fds252671} } @article{fds252672, Author = {White, CW and Lockhead, GR and Evans, NJ}, Title = {Multidimensional scaling of subjective colors by color-blind observers}, Journal = {Perception & Psychophysics}, Volume = {21}, Number = {6}, Pages = {522-526}, Publisher = {Springer Nature}, Year = {1977}, Month = {November}, ISSN = {0031-5117}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1977DL47400004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {Temporal coding theories of color vision suggest explanations of flicker-induced subjective colors such as those that appear on Benham's disk. If color blindness were due simply to photopigment anomalies, then subjective colors might be elicited by central patterns of neural activity in color-blind observers that mimic those which the cones normally produce in colornormal observers. We had color-normal and color-blind observers scale subjective colors like those on Benham's disk for similarity. The inferred color spaces for six normal observers resembled the familiar hue circle, but the spaces for five red-green-deficient observers were compressed along the red-green axis. This is consistent with the position that flicker colors are due to retinal processes, and suggests that color blindness may involve variations of the central nervous system in addition to photopigment anomalies. © 1977 Psychonomic Society, Inc.}, Doi = {10.3758/BF03198732}, Key = {fds252672} } @article{fds252676, Author = {Hutchinson, JW and Lockhead, GR}, Title = {Similarity as distance: A structural principle for semantic memory.}, Journal = {Journal of Experimental Psychology: Human Learning and Memory}, Volume = {3}, Number = {6}, Pages = {660-678}, Publisher = {American Psychological Association (APA)}, Year = {1977}, Month = {November}, ISSN = {0096-1515}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1977DY58300004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Doi = {10.1037/0278-7393.3.6.660}, Key = {fds252676} } @article{fds252673, Author = {Walker, CF and Lockhead, GR and Markle, DR and McElhaney, JH}, Title = {Parameters of stimulation and perception in an artificial sensory feedback system.}, Journal = {Journal of bioengineering}, Volume = {1}, Number = {3}, Pages = {251-256}, Year = {1977}, Month = {August}, ISSN = {0145-3068}, url = {http://www.ncbi.nlm.nih.gov/pubmed/615883}, Abstract = {The relationships between stimulus parameters and perceptions in a prosthetic feedback system were measured using psychophysical methods. Electrical stimulation of the median nerve produced a monotonic relation between frequency of stimulation and the perceived magnitude of the stimulus. There were two qualitatively different perceptions of the stimulation; one for low frequencies and one for high. These two qualities fit different psychophysical continuua, kind of stimulation, and amount of stimulation.}, Key = {fds252673} } @article{fds252674, Author = {Lockhead, GR and King, MC}, Title = {Classifying intergral stimuli.}, Journal = {Journal of experimental psychology. Human perception and performance}, Volume = {3}, Number = {3}, Pages = {436-443}, Year = {1977}, Month = {August}, ISSN = {0096-1523}, url = {http://www.ncbi.nlm.nih.gov/pubmed/886277}, Abstract = {Two reported experiments support holistic, as opposed to analytic, processing models for integral stimuli. Speeded classification data from different information-processing tasks (univariate and correlated) were predicted by distance between stimuli in similarity space but not by redundancy. The results of the filtering and condensation tasks and the notion of configural stimuli are also explicable in these terms. It is shown that some operational definitions commonly used to define integral stimuli are usually confounded with stimulus similarity. The assumption of independence between the attributes that combine to form multidimensional stimuli is not always met and is always an empirical question. When these attributes are not independent, physical and psychological spaces are not necessarily the same. Similarity structure is a crucial concern if inferences of cognitive processing are to be based on information-processing task results.}, Doi = {10.1037//0096-1523.3.3.436}, Key = {fds252674} } @article{fds252675, Author = {Monahan, JS and Lockhead, GR}, Title = {Identification of integral stimuli}, Journal = {Journal of Experimental Psychology: General}, Volume = {106}, Number = {1}, Pages = {94-110}, Publisher = {American Psychological Association (APA)}, Year = {1977}, Month = {March}, ISSN = {0096-3445}, url = {http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1977CZ43100011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=47d3190e77e5a3a53558812f597b0b92}, Abstract = {Conducted 2 experiments to confirm a holistic or "blob" processing model of stimulus identification in which discriminability is related to psychological distances between stimuli. In Exp I, 4 paid observers identified rectangles from linearly correlated and from equally redundant scattered sets of 6 stimuli. The holistic model was confirmed; parallel decision model predictions were confirmed only when congruent with the holistic model predictions. In Exp II, 5 observers identified line pairs from 5 different sets of 7 stimuli, which varied in redundancy and scatter, and rated pairwise dissimilarities among stimuli. Multidimensional scaling of the dissimilarities fitted a Euclidean better than a city-block metric, indicating that the stimuli were integral. These scaled dissimilarities predicted almost all differences in discrimination performance, reaction times and errors, between the first sets. Results confirm the "blob" model and demonstrate that frequently reported redundancy gains are due to an increase in psychological distances among stimuli and not to redundancy per se. A new definition of integrality based on relational dimensions is presented. (18 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1977 American Psychological Association.}, Doi = {10.1037/0096-3445.106.1.94}, Key = {fds252675} } @article{fds29570, Author = {Markle, D. and Walker, C. and McElhaney, J. and Lockhead, G.R.}, Title = {Discriminability of stimulation frequency in an artificial senory feedback system}, Journal = {Proceedings of the 30th Annual Conference on Engineering in Medicine and Biology}, Publisher = {Los Angeles}, Year = {1977}, Key = {fds29570} } @article{fds252665, Author = {Monahan, J and Lockhead, GR}, Title = {Concerning processes involved in judging redundant two-dimensional stimuli}, Journal = {Proceedings of the American Psychological Association}, Year = {1974}, Key = {fds252665} } @article{fds252677, Author = {Gravetter, F and Lockhead, GR}, Title = {Criterial range as a frame of reference for stimulus judgment.}, Journal = {Psychological review}, Volume = {80}, Number = {3}, Pages = {203-216}, Year = {1973}, Month = {May}, ISSN = {0033-295X}, url = {http://www.ncbi.nlm.nih.gov/pubmed/4714675}, Doi = {10.1037/h0034281}, Key = {fds252677} } @article{fds252678, Author = {Lockhead, GR}, Title = {Processing dimensional stimuli: a note.}, Journal = {Psychological review}, Volume = {79}, Number = {5}, Pages = {410-419}, Year = {1972}, Month = {September}, ISSN = {0033-295X}, url = {http://www.ncbi.nlm.nih.gov/pubmed/5076869}, Doi = {10.1037/h0033129}, Key = {fds252678} } @article{fds252663, Author = {Gravetter, FJ and Lockhead, GR}, Title = {Critical response as a frame of a reference for judgment}, Journal = {Program of the Psychonomic Society}, Pages = {26}, Year = {1972}, Key = {fds252663} } @article{fds29573, Author = {G. Lockhead}, Title = {Choosing a Response}, Journal = {International Congress on Memory and Attention}, Year = {1971}, Month = {August}, Key = {fds29573} } @article{fds252679, Author = {Arend, LE and Buehler, JN and Lockhead, GR}, Title = {Difference information and brightness perception}, Journal = {Perception & Psychophysics}, Volume = {9}, Number = {3}, Pages = {367-370}, Publisher = {Springer Nature}, Year = {1971}, url = {http://dx.doi.org/10.3758/BF03212669}, Abstract = {Contour information generated by moving retinal images has been shown by others to be the principal determinant of perceived color. The data presented here show that, for brightness, this information reflects only differences between adjacent stimulus areas. The entire distribution of difference information from contours in the visual field must be specified in order to predict the brightness at any point. © 1971 Psychonomic Society, Inc.}, Doi = {10.3758/BF03212669}, Key = {fds252679} } @article{fds252680, Author = {Ward, LM and Lockhead, GR}, Title = {Response system processes in absolute judgment}, Journal = {Perception & Psychophysics}, Volume = {9}, Number = {1}, Pages = {73-78}, Publisher = {Springer Nature}, Year = {1971}, url = {http://dx.doi.org/10.3758/BF03213031}, Abstract = {Consistent relationships are found between Ss′ absolute judgments of the value of a stimulus and the previous sequence of both stimuli and responses. The form and magnitude of these sequential effects are shown to depend on the presence or absence of feedback and on task difficulty. The pattern of the sequential effects found allows the conclusion that they are due to purely response-system processes. A two-stage model of the judgment process is proposed, and it is argued that observed assimilative effects account for the central tendency effects observed in category judgments. © 1971 Psychonomic Society, Inc.}, Doi = {10.3758/BF03213031}, Key = {fds252680} } @article{fds252681, Author = {Lockhead, GR}, Title = {Identification and the form of multidimensional discrimination space.}, Journal = {Journal of experimental psychology}, Volume = {85}, Number = {1}, Pages = {1-10}, Year = {1970}, Month = {July}, ISSN = {0022-1015}, url = {http://www.ncbi.nlm.nih.gov/pubmed/5458322}, Doi = {10.1037/h0029508}, Key = {fds252681} } @article{fds252682, Author = {Ward, LM and Lockhead, GR}, Title = {Sequential effects and memory in category judgments}, Journal = {Journal of Experimental Psychology}, Volume = {84}, Number = {1}, Pages = {27-34}, Publisher = {American Psychological Association (APA)}, Year = {1970}, url = {http://dx.doi.org/10.1037/h0028949}, Abstract = {2 studies with 3 undergraduates each investigated the effects of previous stimuli on responses in an absolute judgment of loudnesses situation when feedback was and was not provided. Whether or not information feedback was provided, responses were assimilated to the value of the immediately previous stimulus in the series. The effects of stimuli more than 1 trial back in the sequence depend on the presence or absence of feedback. When the entire stimulus scale was shifted up or down to 5 db. from the level on the previous day, a substantial shift occurred in the constant error of judgment in the direction of the scale shift, providing evidence that a relatively long-term (24-hr) memory process was being used in the judgment situation. None of the currently available models is adequate to account for both these results and those of earlier studies. The form of the sequential dependencies observed may depend at least partially on the presence or absence of an identification function from stimuli to responses. (18 ref.) (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1970 American Psychological Association.}, Doi = {10.1037/h0028949}, Key = {fds252682} } @article{fds252662, Author = {Gravetter, FJ and Lockhead, GR}, Title = {Criterial dispersion's and the stimulus range}, Journal = {Proceedings 78th Annual APA Convention}, Pages = {41-42}, Year = {1969}, Key = {fds252662} } @article{fds252683, Author = {Lockhead, GR and Ward, LM}, Title = {Memorial processes and category judgments}, Journal = {Psychonomic Bulletin}, Volume = {15}, Year = {1969}, Key = {fds252683} } @article{fds252661, Author = {Lockhead, GR and Khokhlov, N}, Title = {Multidimensional discriminability and salience of attributes}, Journal = {Proceedings of the Eastern Psychological Association}, Pages = {132}, Year = {1968}, Key = {fds252661} } @article{fds252684, Author = {Holland, MK and Lockhead, GR}, Title = {Sequential effects in absolute judgments of loudness}, Journal = {Perception & Psychophysics}, Volume = {3}, Number = {6}, Pages = {409-414}, Publisher = {Springer Nature}, Year = {1968}, url = {http://dx.doi.org/10.3758/BF03205747}, Abstract = {The effects of preceding stimuli on the judgments of current stimuli were examined in a study using absolute judgments of loudness with feedback. It was found that the response on a given trial was dependent on the stimuli in the preceding sequence of at least five trials. Both assimilation and contrast effects were observed. The form of the dependency of a response on a prior stimulus was a function of the ordinal position of the stimulus in the preceding sequence of trials. The stimulus on the immediately preceding trial had an assimilative effect on the response and preceding stimuli two to five trials removed all showed a contrast effect on a given response. The extent to which these preceding stimuli contributed to the contrast effect was an increasing function of their recency. The reversal of the dependency of the response, from assimilation to the stimulus one trial back, to contrast with the stimuli two and more trials back, indicates a unique function of the immediately preceding stimulus in this task. Since there was a reduction in the variance of responses to those stimuli similar in value to the immediately preceding stimulus, it is proposed that the stimulus and feedback on the last trial were remembered and used asa standardin judging the presented stimulus. A model is presented in which it is assumed that the memory of the magnitude of the immediately preceding stimulus is contaminated in specified ways by prior stimuli in the series. The empirical findings of assimilation and contrastare expected consequences of the proposed memorial processes. © 1968 Psychonomic Journals.}, Doi = {10.3758/BF03205747}, Key = {fds252684} } @article{fds252685, Author = {Lockhead, G}, Title = {Form of redundancy and identification of three-dimensional stimuli}, Journal = {Psychonomic Bulletin}, Volume = {1}, Pages = {2}, Year = {1967}, Month = {October}, Key = {fds252685} } @article{fds252686, Author = {Crovitz, HF and Lockhead, GR}, Title = {Possible monocular predictors of binocular rivalry of contours}, Journal = {Perception & Psychophysics}, Volume = {2}, Number = {2}, Pages = {83-85}, Publisher = {Springer Nature}, Year = {1967}, Month = {February}, ISSN = {0031-5117}, url = {http://dx.doi.org/10.3758/BF03212468}, Abstract = {An analysis of contour disappearances in conflicting patterned stereograms is made from the knowledge of two monocular events: contrast effects associated with contours and phasic local adaptation. It is argued that the percepts resulting from these monocular processes are combined simply by some more central process and that a suppression mechanism may not be necessary to account for contour rivalry. Predictions were tested in three experiments and the results tend to support the argument given. © 1967 Psychonomic Press, Goleta, Calif.}, Doi = {10.3758/BF03212468}, Key = {fds252686} } @article{fds252687, Author = {Lockhead, GR}, Title = {Effects of dimensional redundancy on visual discrimination.}, Journal = {Journal of experimental psychology}, Volume = {72}, Number = {1}, Pages = {95-104}, Year = {1966}, Month = {July}, ISSN = {0022-1015}, url = {http://www.ncbi.nlm.nih.gov/pubmed/5967738}, Doi = {10.1037/h0023319}, Key = {fds252687} } @article{fds252660, Author = {Lockhead, G}, Title = {Visual discrimination and methods of presenting redundant stimuli}, Journal = {Proceedings of the American Psychological Association}, Pages = {67-68}, Year = {1966}, Key = {fds252660} } @article{fds252689, Author = {Chapanis, A and Lockhead, GR}, Title = {A test of the effectiveness of sensor lines showing linkages between displays and controls.}, Journal = {Human factors}, Volume = {7}, Number = {3}, Pages = {219-229}, Year = {1965}, Month = {June}, ISSN = {0018-7208}, url = {http://www.ncbi.nlm.nih.gov/pubmed/5867017}, Doi = {10.1177/001872086500700304}, Key = {fds252689} } @article{fds252688, Author = {Lockhead, G}, Title = {Repetition redundancy and visual form discrimination}, Journal = {Psychonomic Science}, Volume = {3}, Pages = {319-320}, Year = {1965}, Key = {fds252688} } @article{fds29577, Author = {G. Lockhead and E.T. Klemmer}, Title = {Further Data on card punch operator performance}, Journal = {IBM Research Note, NC-39}, Year = {1962}, Key = {fds29577} } @article{fds252690, Author = {Lockhead, G and Klemmer, ET}, Title = {Productivity and errors in two keying tasks: A field study}, Journal = {Journal of Applied Psychology}, Volume = {46}, Number = {6}, Pages = {401-408}, Publisher = {American Psychological Association (APA)}, Year = {1962}, url = {http://dx.doi.org/10.1037/h0048461}, Abstract = {Productivity and error rates were measured for a billion responses by more than a thoushand operators of IBM card punches and bank proof machines in 20 different installations. Productivity increases and errors decrease during the 1st year on the job, sometimes longer. Experienced card punch operators average 56,000 to 83,000 keystrokes per day with 1600 to 4300 strokes per undetected error. Experienced bank proof machine operators average 4350 to 6600 checks per day with about 3500 checks per undetected error. The fastest operators at any installation produce twice as much as the slowest. The least accurate operators make 10 times as many errors as the most accurate. Fast operators tend to make fewer errors (r = -.5). (PsycINFO Database Record (c) 2006 APA, all rights reserved). © 1962 American Psychological Association.}, Doi = {10.1037/h0048461}, Key = {fds252690} } @article{fds252691, Author = {Lockhead, G}, Title = {Methods of presenting paired associates}, Journal = {Journal of Verbal Learning and Verbal Behavior}, Volume = {1}, Number = {1}, Pages = {62-65}, Publisher = {Elsevier BV}, Year = {1962}, url = {http://dx.doi.org/10.1016/S0022-5371(62)80020-6}, Abstract = {Three different methods of ordering a list of nine pairs of nonsense syllables to be learned were compared both when Ss were and were not told that their responses were correct or incorrect. The results showed that the method of presentation of material is unimportant but the effects due to the presentation of partial knowledge of results are equivocal. Providing information as to the correctness of each response early in learning is beneficial. © 1963 Academic Press Inc. All rights reserved.}, Doi = {10.1016/S0022-5371(62)80020-6}, Key = {fds252691} } @article{fds252692, Author = {LOCKHEAD, GR}, Title = {A re-evaluation of evidence of one-trial associative learning.}, Journal = {The American journal of psychology}, Volume = {74}, Pages = {590-595}, Year = {1961}, Month = {December}, ISSN = {0002-9556}, url = {http://www.ncbi.nlm.nih.gov/pubmed/14466145}, Doi = {10.2307/1419670}, Key = {fds252692} } @article{fds29578, Author = {Klemmer, E.T. and Lockhead, G.R.}, Title = {An analysis of productivity and errors on keypunches and bank proof machines}, Journal = {IBM Research Report, RC-354}, Year = {1960}, Key = {fds29578} } @article{fds29579, Author = {Lockhead, G. and Klemmer, E.T.}, Title = {An evaluation of an 8-key word-writing typewriter}, Journal = {IBM Research Report, RC-180}, Year = {1959}, Key = {fds29579} } %% Books @unpublished{fds11139, Author = {G. Lockhead}, Title = {On the Bases for Human Judgment}, Key = {fds11139} } %% Chapters in Books @misc{fds21881, Author = {Lockhead, G.R. and Wolbarsht, M.}, Title = {The moon illusion and other toys}, Pages = {259-266}, Booktitle = {The Moon Illusion}, Publisher = {Hillsdale, NJ: Erlbaum}, Editor = {M. Hershenson}, Year = {2004}, Key = {fds21881} } @misc{fds21809, Author = {G. Lockhead}, Title = {Context and Judgment}, Pages = {186-192}, Booktitle = {Fechner Day 2001}, Publisher = {Pabst Science Publishers, Leipzig, Germany}, Year = {2001}, Key = {fds21809} } @misc{fds21810, Author = {Huettel, S. and Lockhead, G.}, Title = {A Framework for Feature Creation. Commentary on: The Development of Features in Object Concepts}, Booktitle = {Behavioral and Brain Sciences}, Editor = {Schyns, P.G. and Goldstone, R.L. and Thibaut, J.}, Year = {2000}, Key = {fds21810} } @misc{fds340645, Author = {Lockhead, GR}, Title = {Psychophysical scaling methods reveal and measure context effects}, Journal = {Behavioral and Brain Sciences}, Volume = {18}, Number = {3}, Pages = {607-612}, Year = {1995}, Month = {January}, url = {http://dx.doi.org/10.1017/s0140525x00040097}, Abstract = {People cannot make independent judgements of stimulus attributes and so 'it is necessary to theorize in terms of stimulus structures' (Lockhead 1992, p. 551) rather than in terms of stimulus features. The new commentaries here further this statement and also support the observations in the target article that psychophysical scaling methods allow us to measure (1) how context determines judgments and (2) what people remember about prior stimuli.}, Doi = {10.1017/s0140525x00040097}, Key = {fds340645} } @misc{fds21896, Author = {G. Lockhead}, Title = {Context Determines Perception}, Pages = {125-137}, Booktitle = {Psychology, Science, and Human Affairs: Essays in Honor of William Bevan}, Publisher = {Westview Press, NY}, Editor = {F. Kessel}, Year = {1995}, Key = {fds21896} } @misc{fds21894, Author = {G. Lockhead}, Title = {Commentary on S.C. Masin, Some Philosophical Observations on Perceptual Science}, Pages = {67-73}, Booktitle = {Foundations of Perceptual Theory}, Publisher = {North-Holland, Amsterdam}, Editor = {C.S. Masin}, Year = {1993}, Key = {fds21894} } @misc{fds21891, Author = {G. Lockhead}, Title = {Commentary on Perceptual Similarity and Conceptual Structure}, Pages = {273-274}, Booktitle = {Percepts, concepts, and Categories: the Representation and Processing of Information: Advances in Psychololgy}, Publisher = {North-Holland, Amsterdam}, Editor = {B. Burns}, Year = {1992}, Key = {fds21891} } @misc{fds21892, Author = {G. Lockhead}, Title = {On Identifying Things: A case for context}, Pages = {109-143}, Booktitle = {Representation and Processing of Information: Advances in Psychology}, Publisher = {North-Holland, Amsterdam}, Editor = {B. Burns}, Year = {1992}, Key = {fds21892} } @misc{fds21884, Author = {Lisanby, S.H. and Lockhead, G.R.}, Title = {Subjective Randomness, Aesthetics, and Structure}, Pages = {97-114}, Booktitle = {The Perception of Structure}, Publisher = {American Psychological Association, Washington, D.C.}, Editor = {G. Lockhead and J. Pomerantz}, Year = {1991}, Key = {fds21884} } @misc{fds21885, Author = {Pomerantz, J.R. and Lockhead, G.R.}, Title = {Perception of Structure: An overview}, Pages = {1-20}, Booktitle = {The Perception of Structure}, Publisher = {American Psychological Association, Washington, D.C.}, Editor = {G. Lockhead and J. Pomerantz}, Year = {1991}, Key = {fds21885} } @misc{fds21882, Author = {G. Lockhead}, Title = {Category bounds and stimulus variability}, Pages = {267-296}, Booktitle = {Object Structure and Process}, Publisher = {Norwood, NJ: Erlbaum}, Editor = {B. Shepp and S. Ballesteros}, Year = {1989}, Key = {fds21882} } @misc{fds21879, Author = {G. Lockhead}, Title = {Limites de las categorias y variabilidad del estimulo}, Pages = {553-596}, Booktitle = {Percepcion del Objeto: Estructura y Procesos}, Editor = {J.L.F. Trespalacios and B. Shepp and S. Ballesteros}, Year = {1988}, Key = {fds21879} } @misc{fds21870, Author = {Lockhead, G.R. and King, M.}, Title = {Identification functtions and response variability}, Pages = {59-64}, Booktitle = {Fechner Day '86}, Publisher = {Stockholm: International Society for Psychophysics}, Editor = {B. Berglund and U. Berglund and R. Teghtsoonian}, Year = {1986}, Key = {fds21870} } @misc{fds21866, Author = {G. Lockhead}, Title = {Sequential predictors of choice}, Pages = {27-48}, Booktitle = {Preparatory States and Processes}, Publisher = {Hillsdale, NJ: Erlbaum}, Editor = {S. Kornblum and J. Requin}, Year = {1984}, Key = {fds21866} } @misc{fds21862, Author = {Schiffman, S and Lockhead, G.R.}, Title = {Individual Differences Scaling of Taste and Smell}, Pages = {271-303}, Booktitle = {Food Research and Data Analysis}, Publisher = {Barking Essex, England: Applied Science Publishers Ltd.}, Year = {1983}, Key = {fds21862} } @misc{fds21851, Author = {G. Lockhead}, Title = {Know, then decide}, Booktitle = {Cognitive Processes in Choice and Decision Behavior, Chapter 8}, Publisher = {New York: Academic Press}, Editor = {T.N. Wallsten}, Year = {1980}, Key = {fds21851} } @misc{fds21835, Author = {G. Lockhead}, Title = {Choosing a response}, Pages = {289-301}, Booktitle = {Attention and Performance IV}, Publisher = {New York: Academic Press}, Editor = {S. Kornblum}, Year = {1973}, Key = {fds21835} } %% Commentaries/Book Reviews @article{fds21897, Title = {Cognitive Approaches to Human Perception}, Journal = {American Scientist}, Volume = {83}, Pages = {379-380}, Year = {1995}, Key = {fds21897} } @article{fds21838, Author = {G. Lockhead}, Title = {Sensation and measurement}, Volume = {189}, Booktitle = {Papers in Honor of S.S. Stevens}, Editor = {Moskowitz, Scharf and Stevens}, Year = {1975}, Key = {fds21838} } | |
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