title: The early development of reactions to peers with controllable and uncontrollable problems.
mesh_terms: D002648:Child; D002653:Child Behavior Disorders / Q000523:psychology*; D002657:Child Development; D002675:Child, Preschool; D006233:Persons with Disabilities / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D010379:Peer Group; D012917:Social Adjustment