Which approach has probably generated the least empirical research in psychology?

Carly has tendency to meet people and initially love, but soon after loathe them—and then maybe end up loving them again. Carly is showing a pattern associated with which personality disorder?

a. antisocial personality disorder b. borderline personality disorder c. histrionic personality disorder d. narcissistic personality disorder

A psychologist who sees a client's problems as caused by a lack of useful, productive behaviors and lack of consequences following inappropriate actions probably supports which model of psychopathology?

a. existential b. psychodynamic c. behavioral d. humanistic