Utility-weighted sampling in decisions from experience
published: July 28, 2015, recorded: June 2015, views: 93
Report a problem or upload filesIf you have found a problem with this lecture or would like to send us extra material, articles, exercises, etc., please use our ticket system to describe your request and upload the data.
Enter your e-mail into the 'Cc' field, and we will keep you updated with your request's status.
People overweight extreme events in decision-making and overestimate their frequency. Previous theoretical work has shown that this apparently irrational bias could result from utility-weighted sampling–a decision mechanism that makes rational use of limited computational resources (Lieder, Hsu, & Griffiths, 2014). Here, we show that utility-weighted sampling can emerge from a neurally plausible associative learning mechanism. Our model explains the over-weighting of extreme outcomes in repeated decisions from experience (Ludvig, Madan, & Spetch, 2014), as well as the overestimation of their frequency and the underlying memory biases (Madan, Ludvig, & Spetch, 2014). Our results support the conclusion that utility drives probability-weighting by biasing the neural simulation of potential consequences towards extreme values.
Link this pageWould you like to put a link to this lecture on your homepage?
Go ahead! Copy the HTML snippet !