Locus of control is demonstrated as being an important individual belief for counselors to consider in their work. Western cultural bias that has influenced the research with locus of control, and may influence how counselors conceptualize clients' problems, is the notion that internal control is always more desirable than exter nal control. Several areas of locus of control theory are reviewed, including sociocultural influences in the formation of the theory, cultural differences in locus of control, and differing conceptualizations of the construct. In addition, selected research with locus of control and mental health is briefly reviewed. Finally, important implications for practitioners are suggested.