Sex and sex-role influences in same-sex dyads.
D003142:Communication; D004843:Epistasis, Genetic; D005260:Female; D005783:Gender Identity; D005824:Genetics, Behavioral; D006801:Humans; D007062:Identification, Psychological; D007398:Interpersonal Relations; D007697:Kinesics; D008297:Male; D012723:Sex; D013239:Stereotyped Behavior