Need for Cognition: An Individual Differences Approach to Understanding Warning Effectiveness
Research has shown that trait individual differences in need for cognition influence the evaluation of persuasive messages. Product warning instructions can be considered a form of persuasive message because a goal of warnings is to change attitudes and alter behavior. This research investigated the relationship between need for cognition scores and rating and recall measures of warning quality and effectiveness. Product warning instructions were presented with and without injury outcome statistics, which may act as a heuristic cue in the persuasion process. Results showed that individuals higher in need for cognition recalled more warnings that contained statistics and judged all types of warnings as more important. The potential for individual differences to help explain warning effectiveness is discussed.