Title: Choosing Between Information Bundles

Speaker: Menglong Guan, Penn State University

Time: 2025/03/21 9:30-11:00

Venue: ZOOM Meeting (Please scan the QR code below to join)

Abstract

This paper presents an experimental study on how people choose sets of information sources (referred to as information bundles). The findings reveal that subjects frequently fail to choose the more instrumentally valuable bundle in binary choices, largely due to the challenge of integrating the information sources within a bundle to identify their joint information content. The mistakes in choices cannot be attributed to an inability to use information bundles. Instead, these mistakes are strongly explained by subjects’ tendency to follow a simple but imperfect heuristic when valuing them, which I call “common source cancellation (CSC).” The heuristic causes subjects to mistakenly disregard the common information source in two bundles and focus solely on the comparison of the sources that the two bundles do not share. As a result, choices between information bundles are made without adequately considering the joint information content of each bundle. Notably, CSC emerges as a robust explanation for the information bundle choices for all subjects, including those who make perfect use of information bundles to make inferences.