As large numbers of women enter the labor force, decision making and power processes have assumed greater importance in marital relationships. A sample of 51 (N=101) dual-career couples were interviewed to assess independent variables predictive of process power, process outcome, and subjective outcomes of decision making in dual-career families. A process-oriented model of joint decision making served as a basis for questionnaires and interviews. Data were gathered by self-report questionnaires and a conjoint, tape-recorded interview. The context variables, i.e., sex-role preference disparity (SRD), self-esteem disparity (SED), mutuality disparity (MUD), marital-satisfaction disparity (MSD), income disparity (IND), education disparity (ED), occupational-status disparity (OD), and length of marriage (LM), were obtained from self-report questionnaires. Process variables included: (1) who initiated an issue; (2) the proposition which was made; (3) supporting strategies; (4) importance of the matter; and (5) response of the reactor. Multiple regression analysis showed sex-role preference was the single most important predictor of process power, showing a negative relationship. Sex-role preference disparity, mutuality disparity, and income disparity were most predictive of subjective outcomes, and sex role disparity and income disparity had a significant positive relationship with subjective outcome. Mutuality disparity had a significant negative relationship with subjective outcome. The findings suggest that the process-oriented model of decision making is an effective tool for the study of family interaction, and that one of the most important indicators of marital power is marital decision-making. (Author/JAC)