Modification of extreme social isolation by contingent social reinforcement.

Two adults who never talked to anyone were picked for the study. The ward staff could not lock doors or control the room, so the researchers used the only tool left: attention.

Every time a patient spoke to staff or peers, a nurse stopped and chatted for 30 seconds. No attention was given during long quiet spells. The team watched and counted interactions over the study period.

Social contact as a reinforcer worked. Talking and eye contact rose from near zero to about 12 times per hour for both patients.

When the nurses later stopped the extra attention, interaction dropped. When they brought it back, it rose again. The effect was clear even in this loose, real-world setting.

Neuringer et al. (1968) showed the same idea two years earlier. They added prompts and cigarette reinforcers, then faded help. Both studies prove that contingent social events can pull withdrawn adults out of silence.

Alwahbi et al. (2021) moved the idea forward to kids with autism. They paired peer training with written contracts. The core principle—social attention for social behavior—stayed the same, but the package grew to fit a school yard.

Protopopova et al. (2020) swapped people for a therapy dog. Contingent access still boosted responding. The 1970 paper is the grandparent: it first showed that a social reinforcer, delivered only after the target act, is powerful even when you can’t run a tight lab.

You don’t need a fancy clinic or edible treats to draw clients into interaction. Praise, eye contact, a quick joke, or even a high-five can serve as your reinforcer if you deliver it right after social behavior and withhold it during silence. Try marking each initiation with immediate warm attention; track simple counts per hour to see the change.