Rebuilding trust in psychotherapy for biologically explained depression: A two-part experimental study examining the durability of an online psychoeducational intervention

Biological explanations of mental disorders, which are gaining prominence, can decrease trust in psychotherapy. To rebuild trust, this experimental study tests a psychoeducational intervention targeting misconceptions that (1) psychotherapy cannot change the brain; (2) people rarely have agency over biology while psychotherapy requires agency; (3) psychosocial causes, addressed in psychotherapy, are less probable given biological causes. U.S. adults (N = 602) rated psychotherapy's effectiveness for depression before and after learning about depression's biological causes. Absent any intervention, control-condition participants rated psychotherapy to be less effective post biological-causes-information. However, participants who viewed an intervention video explaining why the misconceptions are flawed judged psychotherapy as more effective even after learning about depression's biological causes. Active-control-condition participants, who viewed a video about psychotherapy's effectiveness, without directly addressing the misconceptions, also increased psychotherapy ratings, albeit significantly less than the intervention group. Approximately four weeks later, intervention-condition participants maintained their enhanced trust, without any reminder of the video, whereas the two control conditions showed reduced trust. The study offers a practical tool for broader public use with a lasting effect.