title: Relation of language development to problem solving ability.
mesh_terms: D001321:Autistic Disorder; D002648:Child; D002675:Child, Preschool; D003638:Deafness / Q000151:congenital; D004454:Echolalia; D005260:Female; D006801:Humans; D007223:Infant; D007804:Language Development; D008297:Male; D010553:Personality Development; D011340:Problem Solving; D011574:Psychoanalytic Theory