Birth order and relationships

摘要: Previous studies (Salmon 1999; Salmon and Daly 1998) have found that sex birth order are strong predictors of familial sentiments. Middleborns tend to be less family-oriented than firstborns or lastborns, while differences seem focus on the utility kin in certain domains. If this is a reflection middleborns receiving lesser degree support from (particularly terms parental investment), turning reciprocal alliances outside family, becoming friendship specialists? Are there comparable with respect mating strategies? In study, impact attitudes toward friends, were examined. Two hundred forty-five undergraduates completed questionnaire relating their friends family as well some aspects behavior. Birth did significant several areas. expressed more positive views opinions general. They inclined help need lastborns. Mating strategies also appeared influenced by order, most notably area infidelity, being least likely cheat sexual partner.