Goldberg chose the term "Big Five" to reflect the sheer number of personality-related terms encompassed by each of these five distinct factors. One of these, agreeableness, was defined by a number of personality-related words similar to those present in earlier and more recent manifestations of the construct; examples include "friendly", "good-natured", "cooperative", "trustful", "nurturing", "sociable", and "considerate".

NEO PI

Beginning in the 1970s, Paul Costa and Robert McCrae

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