Validational data on Lowe and Costello's Symbolic Play Test.
D002675:Child, Preschool; D006801:Humans; D007092:Imagination; D007805:Language Development Disorders / Q000523:psychology*; D007806:Language Disorders / Q000523:psychology*; D008297:Male; D010988:Play and Playthings; D011581:Psychological Tests; D013561:Symbolism