The use of categories by bright, normal, and subnormal pre-adolescent girls on the Pikunas graphoscopic scale and the Stephens' categorization tasks /

Morrissette, Mary P.,2013-08-162013-08-161967http://hdl.handle.net/11244/2151x, 124 leaves :Stephens, Wyatt E., 1933-Learning, Psychology of.Psychology, Clinical.Children with mental disabilitiesPikunas, Justin.The use of categories by bright, normal, and subnormal pre-adolescent girls on the Pikunas graphoscopic scale and the Stephens' categorization tasks /Thesis