Increasing generalized social interactions in psychotic and mentally retarded residents through peer-mediated therapy.

The team worked with withdrawn adults in a state hospital. All had psychosis or intellectual disability.

Staff picked the most isolated residents to become peer therapists. They taught these residents how to start short, friendly chats.

Then they watched if the new peer therapists could get other withdrawn residents to talk more. They tracked changes across several wards.

Social talking rose when peer therapists were on duty. The gains spread to residents who never got training.

Four months later the talking was still high. The hospital needed several peer therapists on each ward to keep the change alive.

Barthelemy et al. (1989) and Christopher et al. (1991) showed the same peer trick works for shy elementary girls and boys on the playground. The adult hospital study copies their steps and proves the idea still works after kids grow up.

Jason et al. (1985) and Barrett et al. (1987) used typical kids as helpers. Raslear et al. (1992) flipped the script: they made the most disabled adults the helpers. This twist shows even severely withdrawn people can be teachers, not just learners.

Lowe et al. (1995) and Laermans et al. (2025) later added fancy steps like PRT and Stay-Play-Talk. The 1992 paper keeps it simple: basic greeting and comment skills, no extra props.

If you run a day program or group home, train your quietest clients first. Give them a short script: say hi, ask a question, give a compliment. Rotate two or three peer helpers per room so the talk keeps going when one is absent. You get facility-wide social gains without hiring extra staff.