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Sex determination of fragmentary crania by analysis of the cranial base.

The cranial base can be used to determine the sex of fragmentary or deformed skulls. An initial study used nine measurements taken from 100 crania in the Terry Collection. The sample was divided equally by race and sex. Six regression models were formulated that predicted correctly the sex of the sample with 71-90% accuracy. In a separate test, a control sample of 20 skulls, also drawn from the Terry Collection but not involved with formulating the regression equations, was correctly classified with 70-85% accuracy.