In sociology, homosociality means same-sex relationships that are not of a romantic or sexual nature, such as friendship, mentorship, or others. Researchers who use the concept mainly do so to explain how men uphold men's dominance in society. Homosocial was popularized by Eve Kosofsky Sedgwick in her discussion of male homosocial desire. Sedgwick used the term to distinguish from homosexual and to connote a form of male bonding often accompanied by fear or hatred of homosexuality. Jean Lipman-Blumen had earlier (1976) defined homosociality as a preference for members of one's own sex – a social rather than a sexual preference. The opposite of homosocial is heterosocial, describing non-sexual relations with the opposite sex. In a study presented by Rose, males and females between the ages of 20 and 28 were examined on their evaluations of same- and cross-sex friendships. Results showed a preference for same-sex relationships in both men and women. Cross-sex relationships were evaluated by men and women to be less helpful, and less loyal than same-sex friendships, and friendship formation was found to be different between cross-sex and same-sex relationships as well. Depending on the culture, and family, and social structures, same-sex preferences have been found to develop between 3 and 9 years old. (LaFreniere, Strayer,& Gauthier, 1984; Jacklin& Maccoby, 1978; Harkness & Super, 1985). LaFreniere, Strayer, and Gauthier (1984) conducted a three-year-long study observing fifteen peer groups between the ages of 1 and 6 years old, 98 boys and 93 girls. As they looked into sex segregation in childhood, the researchers found that segregation rose with age and that most Western children exhibit these preferences around 3–4 years old. However, in a study by Harkenss and Super, Kenyan children were not found to have sex-preference in playmates until the ages of 6 to 9 years old. Researchers observed 152 Kenyan children in rural settings and found that this change didn't occur until parental expectations and customary duties increased.