Future surveys should be conducted anonymously to minimize social desirability bias. Focus groups yield an important extension of individual interviews.

Interpersonal traits may contribute to psychotherapy outcome. Dividing the sample according to the quadrants of the interpersonal circumplex, as opposed to cluster analysis, yielded promising results. Patients higher in dominance fared better with cognitive processing therapy, while interpersonal style had no correlations with therapy success in dialogical exposure therapy.