title: An experimental design for assessing the spatial competence of mildly retarded populations.
mesh_terms: D000293:Adolescent; D000328:Adult; D001364:Awareness; D003463:Cues; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D008607:Intellectual Disability / Q000523:psychology*; D008297:Male; D009949:Orientation; D012107:Research Design; D013028:Space Perception