David Illingworth was named a 2015-2016 recipient of the Goizueta Foundation Fellowship award. The Goizueta Foundation Fellowship is awarded to students with Hispanic backgrounds who exhibit exemplary levels of scholarship and innovation.
Author: Carolyn Hartzell
Paper accepted for HFES 2015, Los Angeles
Congratulations to David Illingworth and Rick Thomas whose paper Price as information: Incidental search costs affect decisions to terminate information search and valuation of information sources was accepted to the annual meeting of the Human Factors and Ergonomics Society. Read the abstract below:
This study investigated the influence of incidental search costs on decisions to terminate information acquisition and the valuation of information sources. Participants who paid for information in a sequential hypothesis testing, medical diagnosis task terminated search earlier than those who acquired information without incidental costs. This finding is consistent with research in various search domains that demonstrates the aversive nature of costs. Participants exhibited a preference for highly diagnostic tests over those possessing low diagnosticity when cost distributions required participants to pay the same price to view the outcome of each tests. However, participants showed a preference for tests that were more expensive than their alternatives when costs differed between tests. This finding suggests that incidental costs influence the valuation of an information source during search. Our observation is consistent with a cost-quality substitution heuristic, where acquisition costs become a surrogate for usefulness when estimating the quality of tests.