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Visual Screening versus Auditory Screening: An Alternating Treatments Design

An alternating treatment design was used to measure the differing impact of visual screening and an auditory blocking procedure in the suppression of the screaming behaviour of a profoundly retarded girl. The auditory blocking procedure made use of white noise to mask any background or personal sounds. During separate sessions both screening procedures were applied for a duration of 1 minute following an occurrence of the screaming behaviour. Results showed that both techniques were successful in reducing the frequency of the behaviour. The visual screening procedure was the preferred treatment for maintaining and generalizing the suppression, because of ease of use and mobility.