Lynne McPhersonRon Joachim2026-03-222026-03-22197410.3109/13668257409018752https://doi.org/10.3109/13668257409018752https://andeanlibrary.org/handle/123456789/54299Citaciones: 4SummaryThe present study describes procedures by which aversive stimulation was used in combination with a programme of positive reinforcement to reduce head-banging by a mentally retarded boy. There was a dramatic reduction in head-banging over the forty-six sessions for which records were kept. The child's behaviour improved to the stage where he could be included in a school programme without the risk of self-inflicted injury. The programme that is described is useful in cases of severe head-banging where action must be taken quickly to prevent self-inflicted damage of a permanent nature.enMentally retardedHead (geology)PsychologyReinforcementShock (circulatory)Developmental psychologyMedicinearticle