van Thiel, Sabine, Margot C.W. Joosen, Anne-Linde Joki, Arno van Dam, Jac J.L. van der Klink, and Kim de Jong. “Psychometric Analysis of the Dutch Language Facilitative Interpersonal Skills (FIS) Video Clips”. Research in Psychotherapy: Psychopathology, Process and Outcome 24, no. 1 (April 8, 2021). Accessed April 19, 2024. https://www.researchinpsychotherapy.org/rpsy/article/view/513.