Abstract
The validity of Kagan's hypothesis regarding the involvement of impulsivity in the reproduction of Bender-Gestalt drawings was examined for 76 first graders from a suburban school. The correlation between Koppitz errors on the Bender and impulsivity as defined by mean latency on the Matching Familiar Figures Test was –.31 (p < .01) but the value of r decreased to only –.23 when IQ was partialled out. These findings did not support Kagan's hypothesis since latency for matching accounted for only 5% of the variance in Bender errors. That is, Koppitz errors on the Bender showed almost, if not complete, discriminant validity from impulsivity as defined by latency for matching figures. The r between Bender errors and total working time on the Bender itself was negligible, indicating that Koppitz errors cannot be explained in terms of impulsivity as defined by inadequate working time.
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