Hospitalized toddlers' responses to mothers' tape recordings during brief separations.
D000339:Affect; D002652:Child Behavior; D002673:Child, Hospitalized; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009034:Mother-Child Relations; D009043:Motor Activity; D011386:Projective Techniques; D013637:Tape Recording