ISSN : 0975-2862
EISSN : 0975-9158
ANNU1*, BIMLA DHANDA2
1Department of Human Development and Family Studies, I.C. College of Home Science, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125004, India
2Dean and Professor, I.C. College of Home Science, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125004, Haryana, India
* Corresponding Author : annupanghal1997@gmail.com
Received : 04-08-2020 Accepted : 24-08-2020 Published : 30-08-2020
Volume : 12 Issue : 8 Pages : 765 - 767
Genetics 12.8 (2020):765-767
Keywords : Environment, Fluid intelligence, Heritability estimate, Twins
Academic Editor : Dr Samadrita Mukherjee Sardar, Dr Mohammed S Mustak
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Human Development and Family Studies, I.C. College of Home Science, Chaudhary Charan Singh Haryana Agricultural University, Hisar, 125004, Haryana, India
Author Contribution : All authors equally contributed
The genetic contribution was accounted for 50-60% variance in fluid intelligence of twins. Twin study has supported the concept of genetic and home environmental impact on fluid intelligence of twins. Twins (N = 200) from two districts namely: Bhiwani (N=90) and Hisar (N=110) of Haryana State were assessed at the age of 6-to-8 years using Wechsler Intelligence Scale for Children- Revised (WISC-R) (Wechsler 1974). Heritability estimate was used to analyze the genes contribute to shape the fluid intelligence of twins. The heritability estimates for fluid intelligence in Bhiwani and Hisar district were ranging from 60-70 per cent and remaining 30-40% variance in fluid intelligence of twins of Bhiwani and Hisar was due to environmental factors. Comparison of mean values at district level showed that the twins of Bhiwani district were significantly better in fluid intelligence as compared to Hisar district twins. The correlation coefficient among monozygotic and dizygotic twins for fluid intelligence of twins namely: arithmetic, picture arrangement and object assembly was ranging from r=0.43 (Dizygotic twins) to r=0.78 (Mnozygotic twins) in both Bhiwani and Hisar districts The result also revealed that the monozygotic twins were more correlated in fluid intelligence as compared to dizygotic twins. The fluid intelligence was more influenced by genetic factors as compared to environmental factors.
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