ABSTRACT In the cognitive–affective personality system (CAPS) theory of Mischel and Shoda (1995, 1998), personality is conceived as a system of cognitions and affects that mediates between active situational features and behavior. Two major tasks for this approach to personality are the search for active situational features and for mediating psychological processes within a behavioral domain of interest. We report two studies to address these tasks for the domain of anger and sadness. To design these studies and to analyze the obtained data, novel extensions of our previous developed Triple Typology Model (TTM; Vansteelandt & Van Mechelen, 1998) are proposed. These extensions allow the researcher to test hypotheses concerning potentially relevant active situational features in a systematic and confirmatory way and to examine psychological processes as they occur in concrete situations.