| Term | Definition |
| Personality | An individual's characteristic pattern of thinking, feeling, and acting |
| Trait | A characteristic pattern of behavior |
| Personality Inventory | Questionnaire used to assess personality traits |
| Minnesota Multiphasic Personality Inventory (MMPI) | Personality test used to identify emotional disorders |
| Empirically Derived Test | Tests a pool of items and then selects those that discriminate between groups |
| Social-Cognitive Perspective | Views behavior as influenced by the interaction between people and their social context |
| Recipricol Determinism | Interacting influences between personality and environmental factors |
| Personal Control | Sense of controlling our environment rather than feeling helpless |
| External Locus of Control | Perception that outside forces determine our fate |
| Internal Locus of Control | Perception that we control our fate |
| Learned Helplessness | Hopelessness and passive resignation we learn when unable to avoid repeated aversive events |
| Positive Psychology | Scientific study of optimal human functioning |