Providing independent recreational activities to reduce stereotypic vocalizations in chronic schizophrenics.

Two adults with chronic schizophrenia lived on a hospital ward. They talked to themselves out loud for hours.

Staff gave each person a box of solo leisure items—puzzles, coloring books, and simple crafts. A cue card said “Use your materials.” Staff reminded them every 20 minutes. They could earn tokens, but tokens were optional. The ward ran an ABAB design: baseline, recreation, baseline again, then recreation returned.

When the leisure box was available, stereotypic vocal sounds dropped 60-70%. The drop happened with or without tokens.

When staff took the box away, vocal stereotypy bounced back. The second time the box returned, the drop happened again.

Butler et al. (2021) later showed a simple DRO schedule also cut adult vocal stereotypy, but in community settings with autism. Their work extends this 1987 finding—recreation is not the only low-staff option.

Cohen et al. (1990) and Lucki et al. (1983) used self-management packages to hit near-zero stereotypy in students and adults. All three studies share one message: give the person something clear to do on their own and stereotypy falls, even when staff step back.

McNamara et al. (2019) and Tyrer et al. (2009) got similar drops using response interruption (RIRD) instead of leisure tasks. RIRD needs staff to block each response; the 1987 recreation method needs only a 20-min prompt, so it may save staff time.

You can thin vocal stereotypy without shadowing the client. Hand the person a curated solo-activity box, set a 20-minute timer, and keep your distance. This works for adults with chronic schizophrenia and may extend to other long-stay populations. Try it during downtime, night shifts, or any moment when 1:1 staffing is impossible.