Early humanistic psychologists sometimes assessed personality by

A) interviewing people about their self-efficacy.
B) engaging in intimate conversations about one's self-esteem.
C) asking people to fill out questionnaires that would evaluate their self-concept.
D) administering projective tests.

Early humanistic psychologists like Carl Rogers and Abraham Maslow believed in the importance of understanding one's self-concept in order to assess personality. Therefore, they often used questionnaires and surveys to evaluate a person's self-concept or self-perception. This approach was in contrast to the psychoanalytic and behaviorist approaches which focused on unconscious processes and observable behavior respectively.