Pornography Explicit sexual material. positive psychology The scientific study of how people can
build a happy, meaningful, and purposeful life. posttraumatic stress disorder (PTSD) A condition in which
a person experiences enduring physical and psychological symptoms after an extremely stressful event.
prejudice Negative feelings toward persons based on their membership in certain groups.
Preregistration The practice of researchers reporting their research design, predictions, and plans for data analyses before conducting their study.
Primacy effect The tendency for information presented early in a sequence to have more impact on impressions than information presented later.
Priming The tendency for recently used or perceived words or ideas to come to mind easily and influence the interpre- tation of new information.