Haim Weinberg, PhD, is a clinical psychologist, group analyst and certified group psychotherapist. He is the past president of the Israeli Association of Group Psychotherapy and of the Northern California Group Psychotherapy Society. He taught at the Wright Institute in Berkeley, CA, and the Alliant International University.

Arnon Rolnick, PhD, is a licensed clinical psychologist with special interest in the usage of technology in psychotherapy. He is a certified supervisor in CBT and biofeedback and has written numerous articles on these subjects. Arnon is the head of a clinic in Tel-Aviv, Israel, which integrates various psychotherapeutic approaches.