Same-sex patterns and sex differences in the trust-value basis of children's friendship

Thirty-six children in fourth grade were required (a) to report the secret-sharing, secret-keeping, promise-making, and promise-keeping behaviors of classroom peers; and (b) to judge those classmates on trust and friendship. Teachers provided observations of the children's friendship interaction. Same-sex patterns were found in observed friendship, friendship ratings, trust, secrets shared, proportion of secrets kept, and promises made. These were less frequent/lower for opposite-sex peers than for same-sex peers. As expected, males tended to share fewer secrets with same-sex peers than did females. The expected associations were found among proportion of secrets kept, proportion of promises kept, trust, and rated or observed friendship in females but with one exception in males. The findings supported the conclusion that same-sex friendship patterns are maintained by same-sex trust patterns through (a) infrequent secret sharing with opposite-sex peers and (b) the perception that opposite-sex peers break secrets more frequently than same-sex peers. The findings also supported the conclusion that there are some sex differences in the intimacy/trust basis of friendship.