The "Fruit-Tree Experiment" as a measure of retarded children's preferences of fruit trees under varied conditions of color availability.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003116:Color; D005260:Female; D006801:Humans; D007092:Imagination; D008607:Intellectual Disability; D008297:Male; D011386:Projective Techniques; D012932:Social Facilitation