revealed-differences technique
a method of studying the behavior of members of a dyad or family in a laboratory setting by having them first independently complete a questionnaire, often on somewhat controversial topics. Once the questionnaires are completed and the answers compared, the experimenter presents to the reassembled group of participants one or more of the questionnaire items on which the participants disagreed, asks them to discuss their differing answers, and observes the ways in which the participants reconcile their differences.