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• William Wundt's 1st psychological lab and concept of introspection (structuralism)
• William James wrote the principles of psychology
• Discussed functionalism
• Functionalism - philosophy opposing the prevailing structuralism of  psychology in the 19th century
• Structuralism - study of elements of consciousness, reduces normal conscious experience into basic elements

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• Max Wertheimer
• Focused on how we experience the world
• The whole of an experience is more than a sum of its parts
• Gestalt Psychology - explained perceptions in terms of gestalts rather than by analyzing their constituents

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• People ignored inside feelings; all that mattered was your actions
• If your behavior could be changed, who cares how you feel
• Popular during the 50's
• Behaviorism - theory that all behaviors are acquired  through conditioning
• John B. Watson

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• Sigmund Freud
• Use defense mechanisms to protect our real feelings
• Feelings came from unconscious
• Psychoanalysis - a system used to treat mental disorders by investigating interaction of conscious and unconscious elements in the mind

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• Variety
• Psychologists pick and choose theories depending on the situation
• Eclectic - use of all psychological forms to make assessment