title: How preschool children understand missing complement subjects.
mesh_terms: D001288:Attention; D002675:Child, Preschool; D003210:Concept Formation; D005260:Female; D006801:Humans; D007804:Language Development; D008297:Male; D011578:Psycholinguistics; D012660:Semantics; D013067:Speech Perception; D014705:Verbal Behavior