To identify a relatively small number of the most basic personality traits, trait theorists have useda. free association b. factor analysis c. projective tests d. social cognitive theory e. the mmpi

Factor analysis

Explanation:

Factor analysis refers to the act of analyzing whether different variables have proper influence/correlations in a certain type of situation. People's personalities tend to be influenced by a lot of factors (such as genetics, environmental, social, etc.) Because of this, it is important for trait theorists to  use factor analysis in order to truly measure the personalities.

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answer; belief perseverance;