Psychologists carry out investigations on the mental activity of people, their behavior and also how their brain functions.
Behaviorism can be described as learning by observing and measuring behavior. Cognitive psychology is the study of the brain and a person's mental activity.
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According to behaviorism, what matters is what people do, and how environmental forces teach them to act in a given way instead of another. By contrast cognitive psychology investigates mental process including learning through observation.
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