Groupthink A group decision-making style characterized by an excessive tendency among group members to seek concurrence.
Hard-to-get effect The tendency to prefer people who are highly selective in their social choices over those who are more readily available.
Hawthorne effect The finding that workers who were given special attention increased their productivity regardless of what actual changes were made in the work setting.
Health psychology The study of physical health and illness by psychologists from various areas of specialization.
Hostile attribution bias The tendency to perceive hostile intent in others.
Hypothesis A testable prediction about the conditions under which an event will occur.