A Failure of the Wagner Hand Test to Discriminate among Workers Rated High, Average and Low on Activity Level and General Acceptability

Abstract

Wagner and Copper (1963) reported high discriminative power for one score (the ACTivity score) of the Wagner Hand Test between (unskilled and semi-skilled) workers at Goodwill Industries, Akron, Ohio who had been rated “Satisfactory” or “Unsatisfactory” by their superiors. An attempt to crossvalidate this finding, in a three-group design, in a large Western Canadian Plywood mill failed to produce the expected relationship; neither the ACT score, nor any of the other scores derived from this test showed any consistent trend in terms of postdicting activity level, or general acceptability of the 18 Ss involved in this study.

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