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Publications [#342482] of Scott Huettel

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Journal Articles

  1. McDonald, KR; Broderick, WF; Huettel, SA; Pearson, JM (2019). Bayesian nonparametric models characterize instantaneous strategies in a competitive dynamic game.. Nature Communications, 10(1), 1808. [doi]
    (last updated on 2019/11/14)

    Abstract:
    Previous studies of strategic social interaction in game theory have predominantly used games with clearly-defined turns and limited choices. Yet, most real-world social behaviors involve dynamic, coevolving decisions by interacting agents, which poses challenges for creating tractable models of behavior. Here, using a game in which humans competed against both real and artificial opponents, we show that it is possible to quantify the instantaneous dynamic coupling between agents. Adopting a reinforcement learning approach, we use Gaussian Processes to model the policy and value functions of participants as a function of both game state and opponent identity. We found that higher-scoring participants timed their final change in direction to moments when the opponent's counter-strategy was weaker, while lower-scoring participants less precisely timed their final moves. This approach offers a natural set of metrics for facilitating analysis at multiple timescales and suggests new classes of experimental paradigms for assessing behavior.


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