Direct observation in the infant-school classroom.
D001288:Attention; D002652:Child Behavior; D002675:Child, Preschool; D003299:Cooperative Behavior; D003405:Creativity; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D007398:Interpersonal Relations; D008131:London; D009043:Motor Activity; D010379:Peer Group; D012574:Schools; D012931:Social Environment; D013663:Teaching; D013997:Time Factors; D014705:Verbal Behavior; D014743:Videotape Recording