Modification of severe disruptive and aggressive behavior using brief timeout and reinforcement procedures.

E and his team worked with two teenage boys in a crowded state hospital ward. Both boys had intellectual disability and had hit, kicked, or screamed for years.

The staff gave a 2-minute chair timeout each time aggression or disruption happened. At the same time they praised and handed candy when the boys played nicely or sat quietly.

The researchers flipped the treatment on and off four times to be sure the package, not luck, drove the change.

Aggression and disruption dropped from about 20 times per hour to almost zero when timeout plus reinforcement was in place. The behaviors bounced back each time the plan was removed and fell again when it returned.

Hospital workers said the ward felt calmer and other residents stayed safer.

Koop et al. (1983) later swapped timeout for a classroom token system and still wiped out stealing. The move from hospital to classroom shows the same reinforcement logic works across settings.

Al-Jawahiri et al. (2019) meta-analysis of 28 studies says thinning reinforcement after differential reinforcement keeps gains, but only if the child has some communication skills. E et al. never thinned; they kept the rich schedule all day. Their near-zero rates might have slipped if candy faded too fast.

Smith et al. (2023) found that cycling DRA on and off cuts resurgence better than keeping it steady. E’s ABAB reversals already cycled the whole package, hinting that the on-off rhythm itself may have guarded against relapse.

You can crush severe, long-standing aggression in busy residential settings with a simple two-part plan: brief timeout for problem behavior and steady candy-plus-praise for anything appropriate. No extra staff, no fancy rooms. If you later need to thin reinforcement, check the client’s communication level first and consider cycling the schedule rather than fading it straight down.