title: Sex estimation in forensic anthropology: skull versus postcranial elements.
abstract: When the pelvis is unavailable, the skull is widely considered the second best indicator of sex. The goals of this research are to provide an objective hierarchy of sexing effectiveness of cranial and postcranial elements and to test the widespread notion that the skull is superior to postcranial bones. We constructed both univariate and multivariate discriminant models using data from the Forensic Anthropology Data Bank. Discriminating effectiveness was assessed by cross-validated classification, and in the case of multivariate models, Mahalanobis D(2). The results clearly indicate that most postcranial elements outperform the skull in estimating sex. It is possible to correctly sex 88-90% of individuals with joint size, up to 94% with multivariate models of the postcranial bones. The best models for the cranium do not exceed 90%. We conclude that postcranial elements are to be preferred to the cranium for estimating sex when the pelvis is unavailable.
authors.affiliation: Department of Anthropology, Texas State University, 601 University Drive, San Marcos, TX 78666, USA. mks@txstate.edu
authors.forename: M Katherine
authors.initials: MK
authors.lastname: Spradley
authors.forename: Richard L
authors.initials: RL
authors.lastname: Jantz
mesh_terms: D044383:Black People; D001842:Bone and Bones / Q000033:anatomy & histology*; D002508:Cephalometry; D019992:Databases as Topic; D016002:Discriminant Analysis; D005260:Female; D018732:Forensic Anthropology; D006801:Humans; D008297:Male; D015999:Multivariate Analysis; D054881:Sex Determination by Skeleton / Q000379:methods*; D012886:Skull / Q000033:anatomy & histology*; D014481:United States; D044465:White People; D001741:Black or African American