Living together and the double-funnel theory of courtship.
D000328:Adult; D003380:Courtship; D005260:Female; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008393:Marriage; D011291:Premarital Examinations / Q000523:psychology; D011582:Psychological Theory; D012919:Social Behavior; D012925:Social Conformity