Chronic hair pulling, exhibited by a 27 month-old boy was ameliorated in a 15-week treatment. The methodology focused on teaching the parents to apply a specific combination of differential reinforcement and response-chain interruption procedures. Follow-ups at 6 and 12 months revealed neither the recurrence of hair pulling nor the appearance of other problematic behaviors. © 1979.
Sanchez, V. (1979). Behavioral treatment of chronic hair pulling in a two year old. Journal of Behavior Therapy and Experimental Psychiatry, 10(3), 241–245. https://doi.org/10.1016/0005-7916(79)90070-3