A psychologist is a professional who practices psychology and studies mental states, perceptual, cognitive, emotional, and social processes and behavior. Their work often involves the experimentation, ...
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observation, and interpretation of how individuals relate to each other and to their environments.
Psychologists usually acquire a bachelor´s degree in psychology, followed by a master´s degree or doctorate in psychology. Unlike psychiatric physicians and psychiatric nurse-practitioners, psychologists usually cannot prescribe medication, but depending on the jurisdiction, some psychologists with additional training can be licensed to prescribe medications; qualification requirements may be different from a bachelor´s degree and master´s degree.