Bilateral Transfer Deficit among Congenitally Deaf

Bilateral transfer, we mean practicing an activity with a particular part of the body usually facilitates performance of the same activity with another part of the body. The problem of inter-hemispheric transfer (Bilateral transfer) is more complex. The nature of such interhemispheric problem is not clear as yet. Clinical studies indicated that bilateral transfer of skill is significantly reduced in callosectonized patients and normal controls( Lehman & Lampe,1970). Present study is examined whether bilateral transfer deficits would persist in deaf children at a perceptual level. In order to examine interhemispheric transfer among congenital deaf and normal control group, bilateral transfer of motor skill was assessed with the mirror drawing task. Bilateral transfer is indicator of interhemispheric transfer. Findings of the study revealed that congenital deaf subjects were significantly more inaccurate & committed more errors in the mirror tracing task and had significantly less bilateral transfer of motor skill is found in comparison to control subjects. The present findings allow us to accept a hypothesis of lowered bilateral organization' rather than failure to establish normal pattern of dominance in people with congenital deaf.