We examined if ideal physical and personality matching predicts coital behavior among African American young women (aayw) and young men (aaym) and how these associations vary by gender and relationship type (i.e., monogamous, concurrent). In all, 268 aayw (aged 14-17 years) and 173 aaym completed partnerspecifi c assessments of ideal/actual partners and coital behaviors (i.e., total condom use, condom use at last coitus, coital frequency). gee models were run separately for gender and

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... ip type. Personality matching increased total condom use by 83% for aayw in monogamous relationships (odds ratio [or] = 4.95; 95% confi dence interval [ci] 1.35, 18.17) and reduced total condom use by 13% for aaym in concurrent relationships (or = 0.15; ci 0.03, 0.81). Physical matching increased coital frequency by 56% for aaym in concurrent relationships (or = 1.25; ci 1.07, 1.46). Overall, ideal partner matching selectively predicts coital behaviors across relationship types among aayw and aaym.