The present study, continuing a recent trend, examined multiple influences on adolescent sexuality, focusing on sexual attitudes because of their influence on sexual behavior. Empirical analyses were based on a nonrandom availability sample of 1,587 public high school students and 1,372 parents. Multiple regression analyses were conducted in three phases to elaborate models for adolescent attitudes about premarital sexual intercourse; separate models were developed for females and males. First, a regression model was developed that featured individual adolescent characteristics (e.g., age, gender, locus of control, self-esteem, and religious participation) as predictor variables. A second regression model was developed that included family characteristics (e.g., number of siblings, number of parents in home, communication with mother and father, family strengths, parent contribution to sexuality education, parental discussion of sexual values, and the sexual attitudes of mother and father). In the final step, multiple regression was conducted on both individual and family factors. Results indicated that (1) the integrated model had more explanatory power than either separate model, and (2) females were influenced by more family factors and males were influenced by more individual factors.