Abstract
A group of twentysix hard of hearing children in the age range 4 years. 7 months to 8 years. 6 months were studied for their performance on the "Mysore
Cognitive Capabilities Test (T. Padmini, 1979). Eleven children were included in Group A (oral group), four older cildren in Group A (oral group) and eleven
children in Group B (total communication group). Histroy relevant to each child was collected from the parents or family members or the records. The results
of the study were compared with the classical finding of Jean Piaget on normal hearing children. A comparison both qualitative and quantitative between Group
A and Groups B on the three mental operational tasks of seriation, classification and conservation from the Mysor Cognitive Capabilities test was done.