Although academia has been concerned with the need to expand the use of critical thinking skills in the secondary and collegiate curricula, it has paid little attention to the application of critical thinking skills in adult business education. Challenges for an instructor teaching a class of business executives as opposed to a class of undergraduates include: (1) the varied educational background of the executives; (2) their business experiences; (3) their desire for information they can use in practice rather than theory; (4) their active work lives; and (5) their results-driven rather than process-oriented approach. Critical thinking skills are important if business people are to participate to a greater extent in business decisions. The three major components of critical thinking are argument skills, cognitive processes, and intellectual development. Argument skills are needed for recognizing and coping with errors such as "provincialism" and "the false dilemma." Cognitive processes are often taught by using exercises such as "Lost at Sea" or "Desert Survival," where students have the opportunity to use both creative and critical thinking skills. In addition, case studies may be used to illustrate issues of motivation, define situations, and discuss solutions. Although there is little an instructor can do to drastically change the intellectual development level of a business person in a brief seminar, it is possible to help him or her to see the potential value of a next developmental level. An instructor can apply the principles of William Perry's four levels of intellectual development to teaching business people. (PRA)