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Two functional analyses for self‐injurious behavior (SIB) exhibited by a child diagnosed with mental retardation and autism were conducted. Responding was high and undifferentiated in the first functional analysis, indicating that SIB was maintained by automatic reinforcement. During the second functional analysis, the client wore a padded helmet and all SIB was blocked. SIB decreased in all conditions except attention, suggesting that SIB was multiply controlled (social positive and automatic reinforcement).
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McKerchar et al. (2001) studied this question.
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