Figure 2From: Agreement between clinicians' and care givers' assessment of intelligence in Nigerian children with intellectual disability: 'ratio IQ' as a viable option in the absence of standardized 'deviance IQ' tests in sub-Saharan AfricaHistogram and normal curve distribution of 'ratio IQ' scores as calculated from the ratio of estimated mental age and chronological age of the children. CALIQ - IQ calculated based on ratio of estimated mental age to chronological age.Back to article page