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Author: Annu × End date: 2019 × Start date: 2018 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Genetic and Environmental Architecture of Twins Cognition
    (CCSHAU, 2019) Annu; Dhanda, Bimla
    Genetic and environmental influences on cognition of twins from two districts of state Haryana were assessed. A sample of 100 pairs of twins in the age groups of 6-8 years was chosen from selected locations. Cognition of twins was assessed with help of Wechsler Intelligence Scale for Children WISC-R (Wechsler, 1974) whereas home environment was assessed by using the Home Observation for Measurement of the Environment (HOME) Inventory (Bradley et al. 1988). Regarding personal profile of the respondents, the results revealed that most of the twins were boys having one sibling and second ordinal position. Majority of the twins were living in nuclear family with medium size family structure. With regard to parental education, highest percentage of twins were having their fathers educated 11th and above level but were farmers, where as mothers were educated upto matriculation that was the reason they were homemakers. Result on the twins indicated that all the aspects of cognitive abilities, namely, similarities, digit span, arithmetic, object assembly, comprehension and picture arrangement were found to make significant difference in cognition of twins on the basis of standard test. The heritability estimates shown a great role of genes in framing the overall cognitive abilities of twins. The significant associations of cognitive abilities were found with the variables namely; caste, mother education and occupation in Hisar district. Home environment was also influential factor for development of cognitive abilities in twins of both districts.