Impact of Genetic and Environment onCognitive Proficiency of Twins: Early Childhood

Abstract:

The aim of the present twin study was to analyze the influence of genetics and environmental propensities on the cognitive proficiency of twins. This investigation was performed in the Bhiwani and Hisar districts of the state of Haryana. A snowball and random sampling was used for the sample of 150 pairs of twins in the age group of 3-6 years from 55 villages of two districts, Bhiwani and Hisar. Results of heritability estimates showed that the influence of genetics oncognitive proficiencywas ranging from 46-68% for 3-6 years of twins.The conclusion of heritability estimates indicated thatcognitive proficiency was more influenced by genetic material than environmental circumstances. Monozygotic twins were more correlated with each other in cognitive proficiency than dizygotic twins in both districts.