Early stages of communication development.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003147:Communication Disorders / Q000150:complications*; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D007398:Interpersonal Relations; D008297:Male; D013997:Time Factors; D014705:Verbal Behavior; D014706:Verbal Learning