The persistent impact of incidental experience

As we perform daily activities—driving to work, unlocking the office door, or grabbing a coffee cup—our actions seem automatic and preprogrammed. Nonetheless, routine, well-practiced behavior is continually modulated by incidental experience: In repetitive experimental tasks, recent (~4) trials reliably influence performance and action choice. Psychological theories downplay the significance of sequential effects, explaining them as rapidly decaying perturbations of behavior, with no long-term consequences. We challenged this traditional perspective in two experiments designed to probe the impact of more distant experience, finding evidence for effects spanning up to a thousand intermediate trials. We present a normative theory in which these persistent effects reflect optimal adaptation to a dynamic environment exhibiting varying rates of change. The theory predicts a heavy-tailed decaying influence of past experience, consistent with our data, and suggests that individual incidental experiences are catalogued in a temporally extended memory utilized in order to optimize subsequent behavior.     

Does Therapist–Rater Religious Match Predict Higher Therapist Ratings?

This study investigated whether therapist–rater religious match predicts better therapist ratings. Christian and Muslim Lebanese students (N = 187) were randomized into 3 conditions. A written vignette of the therapist was constant across conditions, but her picture was manipulated to include a veil, a cross pendant, or neither. Participants filled out a therapist rating form afterward. There were no significant differences in overall therapist ratings between groups.