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1- The first force is Psychoanalysis or Psychodynamic or intra-psychic- it reduces humans to levels of animals 2- The second force is Behaviorism - it reduces humans to stimulus-response level 3- The third force is Phenomenology or Humanistic Psychology- it restores human beings to their actual level There are a number of theories of personality ...
The biological basis of personality is the theory that personality is influenced by the biology of the brain.ray, a student of Eysenck, studied personality traits as individual differences in sensitivity to rewarding and punishing stimuli. The significance of Gray's work and theories was his use of biology to define behavior, which stimulated a lot of subsequent research.