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The biological approach to psychology, also known as neuropsychology, is one of many approaches used to explain human mental processes and behavior. Neuropsychologists are psychologists that examine mental processes and behavior using a biological approach.
Chapter 15 examines four perspectives on personality. Psychoanalytic theory emphasizes the unconscious and irrational aspects of personality. Trait theory led to advances in techniques for evaluating and describing personality. Humanistic theory draws attention to the concept of self and to the human potential for healthy growth. The social-cognitive perspective emphasizes the effects of our interactions with the environment.