@inproceedings{fd85ce73d6b64ab38bc4240d2e879090,
title = "Think again? The amount of mental simulation tracks uncertainty in the outcome",
abstract = "In this paper, we investigate how people use mental simulations: do people vary the number of simulations that they run in order to optimally balance speed and accuracy? We combined a model of noisy physical simulation with a decision making strategy called the sequential probability ratio test, or SPRT (Wald, 1947). Our model predicted that people should use more samples when it is harder to make an accurate prediction due to higher simulation uncertainty. We tested this through a task in which people had to judge whether a ball bouncing in a box would go through a hole or not. We varied the uncertainty across trials by changing the size of the holes and the margin by which the ball went through or missed the hole. Both people's judgments and response times were well-predicted by our model, demonstrating that people have a systematic strategy to allocate resources for mental simulation.",
keywords = "SPRT, computational modeling, intuitive physics, mental simulation",
author = "Hamrick, {Jessica B.} and Smith, {Kevin A.} and Griffiths, {Thomas L.} and Edward Vul",
note = "Publisher Copyright: {\textcopyright} Cognitive Science Society, CogSci 2015.All rights reserved.; 37th Annual Meeting of the Cognitive Science Society: Mind, Technology, and Society, CogSci 2015 ; Conference date: 23-07-2015 Through 25-07-2015",
year = "2015",
language = "English (US)",
series = "Proceedings of the 37th Annual Meeting of the Cognitive Science Society, CogSci 2015",
publisher = "The Cognitive Science Society",
pages = "866--871",
editor = "Noelle, {David C.} and Rick Dale and Anne Warlaumont and Jeff Yoshimi and Teenie Matlock and Jennings, {Carolyn D.} and Maglio, {Paul P.}",
booktitle = "Proceedings of the 37th Annual Meeting of the Cognitive Science Society, CogSci 2015",
}