title: High speed scanning of nonalphanumeric symbols in cultural-familially retarded and nonretarded children.
mesh_terms: D000293:Adolescent; D002648:Child; D002657:Child Development; D005260:Female; D005556:Form Perception; D006801:Humans; D008607:Intellectual Disability / Q000145:classification / Q000175:diagnosis* / Q000235:genetics; D007361:Intelligence Tests; D008297:Male; D008568:Memory; D010364:Pattern Recognition, Visual; D011930:Reaction Time; D012737:Sex Factors