摘要：General mental ability is a terminology that represents an individual level of learning, perceiving command, and resolve problems. Objectives of the present study are to assess the mental ability of children’s belonging to different socio-economic class; to examine the sexual difference in general mental ability and head size and to find the relationship between head size and general mental ability. The study was conducted among 100 (50 boys and 50 girls) of fifth standard children’s at schools of Bhatgaon cluster, Baloda Bazar, Chhattisgarh. The general mental ability is assessed by General Mental Ability Test for children (GMATC) and the mathematical analysis was carried out using Statistical Package for Social Sciences (SPSS 16.0). The maximum number of children’s belongs to upper lower socio-economic class and dolichocephalic head size. Out of 100 children’s 26 were outstanding, 25 were excellent, 20 were very good, 18 were good and 11 children’s came in the category of scope for improvement. There is no significant sexual difference in general mental ability (t= 0.06; p<0.05)and cephalic index(t= -0.84; p<0.05). Head circumference shown a significant difference (t= 3.00;p<0.05). Significant weak correlation (r=0.255; p<0.05)) was found between head size and general mental ability. Significant medium correlation (r= 0.588; p<0.01) was observed between parental socio-economic-educational status and general mental ability.
