Effectiveness of therapeutic groups in psychosocial care: analysis in the light of yalom's therapeutic factors.

Objective: to describe professionals' perceptions about the therapeutic effectiveness of group care.

Method: a descriptive, exploratory, qualitative research of the type of intervention carried out with 30 professionals from Psychosocial Care Centers for Alcohol and Drugs in a municipality in center-westerns Brazil, from March to April 2019. Self-applicable instruments and round circles were used.