Journal article

Genetic and Environmental Influences on Analogical and Categorical Verbal and Spatial Reasoning in 12-Year Old Twins

Miriam A Mosing, Jane Mellanby, Nicholas G Martin, Margaret J Wright



Research on the genetic influences on different abstract reasoning skills (fluid intelligence) and their interrelation (especially in childhood/adolescence) has been sparse. A novel cognitive test battery, the Verbal and Spatial Reasoning test for Children (VESPARCH 1), consisting of four matched (in terms of test-procedure and design) subtests assessing verbal [analogical (VA) and categorical (VC)] and spatial [analogical (SA) and categorical (SC)] reasoning, was administered to a population based sample of 12-year old twins (169 pairs). Multivariate analysis was conducted to explore the genetic relationship between the four cognitive sub-domains. Heritabilities were 0.62 (VA), 0.49 (VC), 0..

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Awarded by Australian National Health and Medical Research Council

Awarded by Australian Research Council

Funding Acknowledgements

This research was supported by the following grant from the Australian National Health and Medical Research Council (NHMRC 552485) and the Australian Research Council (ARC DP1093900). We would like to thank Ann Eldridge and Marlene Grace for the test administration, assessment and data collection and David Smyth for IT support. Finally, this research would not be possible without the willing co-operation of the young twins and their families who participated in this study.