The Effect of Commitment on Expectancy Value and Expectancy Weight in Social Decision Making

Abstract
Undergraduate students were asked to perform several interracial behaviors. Half of the subjects were committed to their decisions prior to volunteering; the other half were not. Committed subjects volunteered for fewer behaviors and evaluated the behaviors less positively than did uncommitted subjects. Multiple regression analyses revealed that committed subjects placed the most weight on attitudinal considerations whereas uncommitted subjects placed the most weight on personal norm considerations in making their behavioral decisions.