Two studies investigated the characteristics of high-risk Hispanic parents with young children who were enrolled in a primary prevention home visitation program targeting first birth families. In the first study, more and less acculturated high-risk Hispanic families were compared to high-risk non-Hispanic White families on differences in demographic characteristics, risk factors associated with poor child outcomes, and parent behaviors related to infant health. Using the General Linear Model Univariate procedure, these characteristics were then related to level of parenting skills, measured after approximately one year of service. A total of 1005 families were included in the study. There were important differences in parent psychosocial characteristics, health risks, and outcomes among Hispanic families. Hispanic mothers who were more acculturated, as measured by use of English in the home, were more likely to be at risk for substance abuse, mental illness, and family conflict. They were more likely to smoke and less likely to breastfeed. Less acculturated Hispanic mothers were less educated and more likely to be isolated. Controlling for pretest scores and education level, there were significant between group differences on parenting skills after one year of service, however the effect was small and overshadowed by the significant interaction effect between partner status and household category. Scores for single Spanish-speaking Hispanic mothers were significantly lower than scores of Spanish-speaking Hispanics in partner households. Risk factors that were positively associated with program progress included breastfeeding and mother's education level. Smoking, mental illness, and unrealistic expectations for the child were negatively associated with program progress. The second paper addressed the efficacy of an age-paced parenting newsletter as part of a home-visiting program for Spanish-speaking Hispanic parents. Family Service Workers serving these families delivered the newsletter and used it as a curriculum guide and teaching tool for families. Parents reported reading the newsletter, learning from it, and changing their behavior in response to newsletter content. Home visitors reported that it was a useful tool to reach high-risk parents with important parenting information. They found that it was particularly useful to combat inappropriate or unhealthful parenting advice from well-meaning family members and friends. / Graduation date: 2004