Toilet training of normal and retarded children.

Mahoney et al. (1971) built an operant chain to teach toilet use. A small device beeped the instant urine touched it. The sound told the child to stop, pull pants down, sit, and finish in the potty.

Eight children took part. Some had intellectual disability. Some were neurotypical. All were still in diapers.

Seven of the eight kids reached the success rule: no wet pants for three sessions in a row. When the beeper was removed, the skill stayed.

Training was fast. Most children needed only a few days.

Libero et al. (2016) later looked at twelve similar urine-alarm studies. They agreed the beep is helpful, yet warned the proof is still thin. Their review includes the 1971 paper as an early win.

Mruzek et al. (2019) swapped the old beeper for an iPhone app. Autistic children used the app at home. Results were equal to standard training, but parents spent less time each day. The new tool extends the 1971 idea to new tech and a new group.

Northup et al. (1991) used the same logic for safety. They taught adults with severe ID to leave the house when the fire alarm sounded. Both studies chain an auditory cue to rewarded steps, showing the method travels across ages and skills.

You can copy the 1971 chain today. Place a cheap urine alarm in the underwear. Have pants, potty, and stickers ready. Prompt the full chain after every beep. Fade the alarm once dryness stays put. The tiny device does the watching for you, so staff can focus on praise instead of timed sits.