This work investigates the destructive forces that emerge within group therapy settings and how these dynamics can undermine the therapeutic process. Morris Nitsun, a clinical psychologist, draws upon his extensive experience in group analysis to examine the phenomenon of the 'anti-group.' He argues that groups possess an inherent potential for both constructive growth and destructive regression, requiring the therapist to navigate these opposing currents to maintain a functional environment.

Experts in group psychotherapy recognize this text as a foundational contribution to the understanding of group dynamics and resistance. Practitioners frequently cite the book for its clinical depth and its practical utility in managing complex group interactions.