This study comprised a longitudinal design at two time points (pre- and post-treatment) in which the final factor involved repeated measures. Only patients with affective and neurotic disorders aged between 18 and 65 years were included in the study. Patients’ pre-treatment self-esteem scores were rated on a continuum from low through to high. The groups in which patients completed the GCBT programme were assigned as being either low, balanced or high self-esteem groups. The groups were classified according to the majority of participants. That is, groups with greater than 50% of participants displaying low, medium, or high self-esteemwere classified as being either a low, balanced or high self-esteem group. Individual and group self-esteem scores were derived based on participant scores on the Rosenberg Self-Esteem Scale (RSES) measure. CBT groups with less than four patients were not included in the study.