Dr. Mehl wants to know if narcissists use more self-referential language (e.g., I, me,
and my), so he examines the correlation between narcissism and total first-person
singular pronoun use in a multi-sample study of 5,000 college students. Dr. Gosling is
interested in what your stuff says about you, so he examines how a person's living
and work spaces relate to their standing on the Big Five personality traits. Dr. Mehl's
research uses the trait approach to studying personality whereas Dr. Gosling's
research uses the ______ trait approach to studying personality.
single, many
essential, many
single, essential
none of the above