Final answer:
Humanistic perspective researchers use personality assessments, such as self-report inventories and projective tests, to understand personalities.
Step-by-step explanation:
Humanistic perspective researchers use personality assessments to understand and study personalities. One common assessment used by humanistic psychologists is the self-report inventory, which is a questionnaire that individuals complete to provide information about their personality traits, values, and beliefs. Another assessment method used is the projective test, which presents individuals with ambiguous stimuli to uncover unconscious thoughts and feelings. Overall, these assessments help humanistic psychologists gain insights into individuals' self-perceptions and subjective experiences.