Generalized control of persistent thumbsucking by differential reinforcement of other behaviors

Thumbsucking exhibited by an 8-yr-old girl was effectively reduced in the laboratory by reinforcing thumbsucking-free intervals of increasing length with pennies (escalated DRO) while she watched television. Generalization-to-home techniques included having the mother administer the reinforcements in the lab, conduct the DRO sessions at home, and record thumbsucking rate during bedtime storytelling sessions. A DRO “spot-check” method was instated to control thumbsucking during all other times. Thumbsucking was completely eliminated, with no return of the behavior reported during any of 12 monthly follow-up calls. Discussion includes emphasis on transition of treatment from clinic to home.