This research examines changes in decision-making styles as a result of participation in scenario planning. A quasi-experimental pretest-posttest design and several nonparametric tests were used to analyze data gathered from research participants in a technology firm in the Northeastern United States. Results show that participants tend to transition toward more intuitive-based decision-making styles after participation in scenario planning. Limitations are examined and conclusions are drawn concerning the effects of scenario planning on participation decision-making styles as measured by the General Decision-Making Style Survey. (Contains 3 tables and 1 figure.)