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                            Library & Multimedia
 Secular Change in Popular Morphological Traits of the Skull and Pelvis
NCJ Number
              253901
Journal

*American Journal of Physical Anthropology* Volume: 168 Dated: 2019 Pages: 127-127
Author(s)
          Alexandra R. Klales;
                        Holly Long
Date Published

2019
Length
              1 page
Annotation
              In order to examine secular change in morphological skull and pelvic traits frequently used for sex estimation, score data of the five Walker (2008) traits (nuchal crest-NC, mastoid process-MP, glabella-G, supra-orbital margin-SO, mental eminence-ME) and the three Klales et al. (2012) traits (ventral arc-VA, subpubic contour-SPC, medial aspect of the ischio-pubic ramus-MA) were collected from 1,734 individuals of known sex and ancestry from multiple skeletal collections.
Abstract
              Temporal variation was assessed by comparing trait score frequencies between contemporary and historic samples using the Mann-Whitney U test. Significant differences between the modern and historic samples were found for the G (p=0.012) and left SPC (p=0.039) in black females and for G (p=0.008), left MP (p=0.012), and the SPC (p=0.037 left; p=0.002 right) in black males. In all cases, the contemporary black sample had significantly lower (i.e., more gracile) scores. In Whites, significant differences between temporal periods were found for the MP (p=0.000 left and right), G (p=0.000), and NC (p=0.03) in females and the NC (p=0.000) in males. All three traits of the pelvis were significantly different at the p>0.05 level for both white males and females. All traits exhibited significantly lower scores (i.e., more gracile) in the modern sample except for the NC which has more robust/higher scores in the modern white samples. Overall, there are patterned changes occurring in these skull and pelvic traits over time which can impact the utility of these traits for accurate sex estimation in bioarchaeological and forensic contexts. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2015-DN-BX-K014


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
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  Award
        An Interactive Morphological Database for Estimating Sex in Modern Adults
    
  
  
Date Published: January 1, 2019
    
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