This paper explores the preliminary results of an ongoing 3-year study of cognitive function and cognitive education among hearing-impaired persons (n=200) and considers these results in the context of previous studies. Cognitive task performance among the deaf was below average for the verbal and sequential skills associated with the left hemisphere, but more importantly, performance was above average for visual and spatial skills associated with the right hemisphere. Reading and mathematics achievement directly correlated with this cognitive profile, especially with verbosequential performance. (Author/PB)