Human Reproductive Behaviour

Human reproductive behaviour. Sexual selection and human reproductive behaviour.  Cunningham (19 86), found that men find women with large eyes, small noses and chins, dilated pupils and wide smiles were more attractive. Way forth (2005), found that masculine facial features like a square jaw, ridged eyebrows, small eyes and a symmetrical face was preferred by women. Bruce and Young (19 98), found that there is a preference for symmetrical faces in both men and women.   Langlois et al (2000), carried out a study with 919 students into physical attractiveness and found that there is within cultures as to who was attractive and who was not. They also found that a preference for attractive faces is shown in very early childhood and has emerged strongly by the time children are around 26 months old.   Singh (1993), found that across cultures there is a preference for waist- hip ratio of 0.7 for women which produces an hour glass figure. Gross (2001), found that the waist-hip ratio for men is around 0.85 to 0.9. Pawlowski (2008), found that in both sexes 5% longer legs than average were seen to be the most attractive.   Partner selection.     Dinbar and Waynforth (19 95), took 900 personal advertisements from newspapers and found that a younger partner was important to 42% of the men compared to 25% of the women. Physical attractiveness was also looked for in 44% of men compared with 22% of women.   David Buss (19 89) looked at partner preferences over 33 countries, studding 4,601 men and 5,446 women and found cross culture preferences. Men value physical attractiveness more than women did. Men value women who were younger than themselves. Women valued financial capacity.   Baily and Zucker (19 95) looked at preferences in gay and straight men and found them to be very similar. They both prefer physical attractiveness over financial status.   Kenrick et al (19 95) compared heterosexual and homosexual and found that gay and straight men had similar preferences, both were happy with older or younger partners when they were in their twenties. However when they got older their preference changed to younger partners. Sprecher (19 98) found a range of personal qualities which included the personality of the partner, reciprocal liking and similar attitudes and interests. Differences in reproductive behaviours.     There are also preferences and similarities in the human reproductive behaviours.   1. The tendency to engage in casual sex. Clark and Hatfield (19 89 and 19 90) got a sample of men and women students to approach strangers and ask them a series of questions. To go out with them that night. To go back to their house with them. To have sex with them.   They found that 50% of both man and women agreed to go out with them, none of the women agreed to have sex with them, 75% of men agreed to have sex and 69% of those men agreed to go back to their house.…