At the same time, McCarthy has been influenced by studies about the brain hemispheres. McCarthy supports
the idea that especially two results of these studies are directly related to education: The first one is that studies
of the brain hemispheres show that different lobes have different functions. The two lobes have different skill
areas and react to different stimuli although they always work together. Secondly, McCarthy supports that the
differences in application of neutral system causes the emergence of the individual differences, as well. Also,
these findings have supported the research results of Gregorc, Jung, and Kolb. As a result of his research,
McCarthy classified the learning styles as follows; Type 1: Innovative Learners, Type 2: Analytic Learners,
Type 3: Common Sense Learners, Type 4: Dynamic Learners (Ojure, 1997; Kelly, 1990; McCarthy, 1987).