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NCJ Number: 249962 Find in a Library
Title: Ancestry Estimation in Forensic Anthropology: Geometric Morphometric versus Standard and Nonstandard Interlandmark Distances
Journal: Journal of Forensic Sciences  Volume:61  Issue:4  Dated:July 2016  Pages:892-897
Author(s): K. M. Spradley; R. L. Jantz
Date Published: July 2016
Page Count: 6
Sponsoring Agency: National Institute of Justice (NIJ)
Washington, DC 20531
Grant Number: 2008-DX-BX-K46
Document: PDF
Type: Report (Grant Sponsored); Report (Study/Research); Research (Applied/Empirical)
Format: Article; Document (Online)
Language: English
Country: United States of America
Annotation: The goal of this research was to test the discrimination ability of standard and non-standard craniometric measurements and data derived from geometric morphmetric (GM) analysis.
Abstract: Standard cranial measurements are commonly used for ancestry estimation; however, 3D digitizers have made cranial landmark data collection and geometric morphometric (GM) analyses more popular within forensic anthropology. Yet there has been little focus on which data type works best. The current study used 31 cranial landmarks to generate 465 interlandmark distances, including a subset of 20 commonly used measurements, and to generate principal component scores from procrustes coordinates. All were subjected to discriminant function analysis to ascertain which type of data performed best for ancestry estimation of American Black, White, and Hispanic males and females. The non-standard interlandmark distances generated the highest classification rates for females (90.5 percent) and males (88.2 percent). Using non-standard interlandmark distances over more commonly used measurements leads to better ancestry estimates for the current U.S. population structure. (Publisher abstract modified)
Main Term(s): Forensic sciences
Index Term(s): Americans; Ancestry Assessment; Bone analysis; Forensic anthropology; Gender issues; NIJ grant-related documents; NIJ Resources; Testing and measurement; Victim identification
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