Studies of the human brain suggest that cerebral dominance, the preference for either the right or the left hemisphere to direct the body's behavior, plays a causal role in distinctive learning styles and behavior patterns. The two halves of the brain are physically almost identical at birth, but childhood experiences which utilize one hemisphere more than the other provide "training" and result in the dominance of different modes of thought, i.e., sequential, verbal, analytic and logical for the left hemisphere and holistic, visual, metaphoric and intuitive for the right hemisphere. When the integration of the two hemisphere functions does not take place, a strong or extreme preference for one mode over another can result in learning and behavior problems. Tools are available to aid those in the helping professions identify hemisphere preference, e.g., the Cerebral Dominance Observation Guide, measurements of reaction time and eye movements, and a dichotic listening test. Helping professionals should provide learning or counseling techniques which will exercise the unstimulated hemisphere and work toward the integrated functioning of the two hemispheres. (MCF)