Estruturas faciais de homens e mulheres ficaram mais semelhantes ao longo do tempo

quarta-feira, abril 06, 2011

Facial Structures of Men and Women Have Become More Similar Over Time

ScienceDaily (Apr. 5, 2011) — Research from North Carolina State University shows that they really don't make women like they used to, at least in Spain. The study, which examined hundreds of Spanish and Portuguese skulls spanning four centuries, shows that differences in the craniofacial features of men and women have become less pronounced.




A forthcoming study from North Carolina State University, which examined hundreds of Spanish and Portuguese skulls spanning four centuries, shows that differences in the craniofacial features of men and women have become less pronounced. (Credit: David Hunt, North Carolina State University)


"Improving our understanding of the craniofacial features of regional groups can help us learn more from skeletal remains, or even help us identify an individual based on his or her remains," says Dr. Ann Ross, an associate professor of anthropology at NC State and principal investigator of the study. The researchers looked at more than 200 skulls dating to 20th and 16th century Spain, as well as approximately 50 skulls from 20th century Portugal.

Researchers found that craniofacial differences between contemporary men and women are less pronounced than they were in the 16th century. The researchers also found that, while craniofacial features for both sexes in Spain have changed over time, the changes have been particularly significant in females. For example, the facial structure of modern Spanish females is much larger than the structure of 16th century females. This difference may stem from improved nutrition or other environmental factors.

The researchers paid particular attention to structural differences between male and female skulls because "this can help us establish the sex of the remains based on their craniofacial features," Ross says -- which is particularly important when an incomplete skeleton is found. "Being able to tell if a skull belonged to a man or woman is useful in both criminal investigation and academic research."
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Read more here/Leia mais aqui: Science Daily

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Forensic Science International
Volume 206, Issue 1 , Pages 214.e1-214.e5, 20 March 2011

Implications of dimorphism, population variation, and secular change in estimating population affinity in the Iberian Peninsula

A.H. RossD.H. Ubelaker, E.H. Kimmerle

Received 28 January 2010; received in revised form 13 December 2010; accepted 3 January 2011. published online 03 February 2011

Abstract 

Morphometric cranial variation among Spanish samples was compared to a 19th century Portuguese sample using both traditional and three-dimensional approaches. The Spanish samples included the regional 19th century Oloriz collection and the local 16–17th century Villanubla and Vallolid sample from northwestern Spain. Results suggest moderate variation among the samples and suggest that varying patterns of regional variation, sexual dimorphism and secular change represent important factors to be considered in the evaluation of population affinity using craniometric approaches.

Keywords: Craniofacial variation, Sexual dimorphism, Iberian Peninsula, Forensic Anthropology Population Data

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