For example, both alcoholic subjects and elderly control subjects, despite differences in cognitive performance patterns (mentioned earlier), exhibit a performance pattern on laterality tasks (see box, p. 94) that is similar to that of nonalcoholic control subjects. Thus, they do not exhibit deficits on these tasks (Ellis 1990). Therefore, these laterality findings do not support the right hemisphere model. These findings suggest that the functional deterioration associated with alcoholism and aging influence both hemispheres of the brain. This view is discussed below in more detail.
