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  • Title: Matching-to-sample assessment of stimulus overselectivity in students with intellectual disabilities.
    Author: Dickson CA, Deutsch CK, Wang SS, Dube WV.
    Journal: Am J Ment Retard; 2006 Nov; 111(6):447-53. PubMed ID: 17029502.
    Abstract:
    A delayed matching-to-sample task with multiple sample stimuli was used to evaluate stimulus overselectivity in 70 individuals attending residential special-education schools. A Mental Age Equivalent score (MAE) was obtained for each student using the Peabody Picture Vocabulary Test. Twenty-one participants failed to complete matching-to-sample pretests (mean MAE = 3.70 years). Results on the multiple-sample test for the remaining 49 participants indicated no overselectivity for 14 students (mean MAE = 7.44 years) and were consistent with overselectivity for 35 students (mean MAE = 5.28 years). Performances of students with overselectivity were more variable than those with no overselectivity. The MAE scores were related to both matching-to-sample performance and stimulus overselectivity.
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