No evidence for sex-linked or sex-limited gene expression influencing spatial orientation |
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| Authors: | Rosemary Jardine N. G. Martin |
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| Affiliation: | (1) Department of Population Biology, Research School of Biological Sciences, Australian National University, Canberra, Australia;(2) Department of Human Genetics, Medical College of Virginia, Box 33, 23298 Richmond, Virginia |
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| Abstract: | Scores of 83 pairs of twins and their parents on the Cubes Comparison Test have been analyzed to test competing hypotheses about the origin of individual differences in spatial orientation. Models allowing for polygenic sex-linked or sex-limited gene expression show no improvement in fit over the simple autosomal additive polygenic model. However, individual environmental influences (E1) account for twice as much variance in males as in females. |
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| Keywords: | spatial ability sex linkage sex limitation sex differences |
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