1. the scientific study of the human mind and behavior
2. the mental and emotional factors that influence a person’s behavior in a particular situation

Examples

• She majored in psychology at the university.
• The psychology behind consumer behavior is complex.
• Sports psychology helps athletes improve their mental game.
• Understanding child psychology is important for teachers.
• The psychology of the crowd influenced their decision.
• He studied criminal psychology to become a profiler.
• The team’s psychology changed after their big win.