From the discovery of Single Session Therapy in the 1980s – with the first studies of M. Talmon, MF Hoyt and R. Rosenbaum at the Kaiser Permanente in Oakland, California (Talmon, 1990) – to date, research on Session Therapy Single have expanded, going through different stages.

SST has developed over the years, finding spaces of application in different contexts (public and private), with different therapeutic approaches and in multiple areas of intervention (mental health, families, emergency, work) to the point that a continuous and systematic research and verification of results to affirm its usefulness and effectiveness as a method of intervention.