Editing Need for power (section)

===Murray's system of needs===
Henry Murray was one of the first psychologists to systematically investigate human needs. In his 1938 book, ''Explorations in Human Personality'', he identified and labeled twenty needs he believed were universal in nature for all humans. Later research demonstrated that [[Murray's system of needs]] positively correlates with the [[Big Five personality traits]].<ref>{{cite journal|title=From catalog to classification: Murray's needs and the five-factor model.|journal = Journal of Personality and Social Psychology|first1=Paul T.|last1=Costa|first2=Robert R.|last2=McCrae|volume=55|issue=2|pages=258–265|doi=10.1037/0022-3514.55.2.258|year = 1988}}</ref>