Analysis of facial dimensions of 86 young adults and their 76 parents indicates that a disproportionate sexual dimorphism exists in the ramus of the mandible, demonstrating a regional difference in growth response. The male ramus is on the average 14% longer than the female ramus, whereas other facial dimensions approximate an 8% sex difference. The findings have relevance to the analysis of skeletal remains and suggest the desirability of age specific discriminant function analysis for the sexing of adult mandibles.
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Hunter et al. (1972) studied this question.
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