The proposed study seeks to estimate the prevalence of ambivalence about undergoing diagnostic testing among women referred for prenatal genetic counseling, and the predictors and decisional consequences of such ambivalence. Women seen at six different U.S. prenatal clinics for genetic counseling at increased risk for carrying a fetus with trisomy 21 \[N=240\] will be asked to complete a questionnaire on three occasions: prior to counseling; immediately after counseling, and later by telephone. These data will be used to describe the extent to which a sample of U.S. women referred for prenatal counseling based upon maternal age or results of a screening test are ambivalent about prenatal testing and might benefit from interventions aimed at improving the quality of decision-making.