title: An experimental analysis of the relationship of subjects and object noun phrases.
mesh_terms: D002648:Child; D003216:Conditioning, Operant; D004495:Education of Persons with Intellectual Disabilities; D005108:Extinction, Psychological; D005793:Generalization, Psychological; D006801:Humans; D007804:Language Development; D007806:Language Disorders / Q000628:therapy*; D008037:Linguistics; D008297:Male; D012193:Reversal Learning; D013070:Speech Therapy