09 Personality
Understand how psychologists define personality, explain individual differences, describe personality change, and assess personality responsibly.
and its major perspectives
is the relatively enduring pattern of thoughts, feelings, and behaviors that distinguishes one person from another. It helps explain why people often respond in characteristic ways, while recognizing that behavior can also change with the situation. psychology studies both these relatively stable patterns and the sources of individual differences.
Different theories highlight different influences. They are best treated as complementary lenses rather than interchangeable explanations.
Theoretical perspectives on
The major perspectives explain by emphasizing different influences:
emphasize unconscious motives, internal conflicts, and the influence of early relationships. Freud proposed that reflects interactions among the id, ego, and superego. Later psychodynamic theorists gave greater attention to social relationships and development across the lifespan.
focus on experience, thought, and behavior. Behaviorists explain learned patterns through consequences such as reinforcement. Social-cognitive theorists, including Albert Bandura, also emphasize observational learning, beliefs about one's abilities (), and reciprocal influence among the person, behavior, and environment. For example, a student who expects to succeed may volunteer more often, gain practice, and strengthen that expectation.
emphasize conscious experience, personal meaning, choice, and growth. Carl Rogers highlighted the importance of the self-concept and acceptance; Abraham Maslow explored motivation and self-actualization. These approaches ask how people pursue growth, not only how problems arise.
examine how inherited predispositions, temperament, physiology, and evolutionary processes may contribute to . Genetic influence is probabilistic, not destiny: traits reflect many influences, including experience and environments.
Trait theories describe relatively consistent individual differences along dimensions. The widely used model summarizes traits as openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism, often remembered as OCEAN. People have all five to varying degrees; these are continua, not “types.” Someone can, for instance, be highly conscientious yet introverted.
Traits, context, and change
Traits summarize how people tend to think, feel, and act, but they do not dictate every action. A person may be talkative with close friends and reserved in a formal meeting. This means behavior reflects both individual tendencies and the demands or opportunities of a particular setting. Social roles, culture, learning history, and relationships also shape how traits are expressed.
shows both continuity and change. People often retain their relative standing compared with others on a trait, yet average trait levels and individual patterns can shift over time. Research finds that traits can change during adulthood; life experiences may contribute, though change varies across people and traits. Genetic findings describe variation within a population, not a fixed percentage of any one person's . Genes and environments work together in complex ways.
assessment
Psychologists select assessment methods to fit the question and the person being assessed:
ask people to rate statements or choose responses. They are efficient and can measure defined traits, but scores may be affected by self-awareness, response style, or a desire to look favorable.
collect observations from people who know the individual. Comparing these reports with self-reports can reveal differences in perspective.
provide information about a person's experiences and behavior in context. Structured approaches use consistent questions or coding rules to support comparison.
ask people to respond to ambiguous material, such as an image or incomplete sentence. Their interpretations require specialized care; conclusions should not rest on a method without adequate evidence for its intended use.
A sound assessment considers , the consistency of measurement, and , whether evidence supports the intended interpretation. Scores should be interpreted in light of appropriate comparison groups, language, culture, and the purpose of testing. No single score captures a whole , and test results are most useful when combined with other relevant information.