Table of Contents
Journal of Anthropology
Volume 2014, Article ID 819472, 5 pages
Research Article

Dolicocephalization in Cephalic Indices of Adult Yorubas of Nigeria

1Department of Anatomy, Faculty of Basic Medical Sciences, College of Health Sciences, University of Port Harcourt, Port Harcourt, Nigeria
2University of Port Harcourt Health Centre, Port Harcourt, Rivers State, Nigeria

Received 17 September 2014; Accepted 18 November 2014; Published 3 December 2014

Academic Editor: Philipp Mitteroecker

Copyright © 2014 G. S. Oladipo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Cephalic index is an important parameter useful in establishing racial and sexual dimorphism. This study was carried out to determine the cephalic indices of adult Yorubas of age 18 to 40 years. One thousand and twenty (1020) Yoruba adults consisting of 493 males and 527 females were recruited randomly for the study. These were all residents of Port Harcourt, Rivers State of Nigeria. The mean cephalic index of Yorubas without reference to gender was 74.39 ± 5.41. Dominant and rare types of head shapes are dolicocephalic (68.33%) and hyperbrachycephalic (5.00%), respectively. The mean cephalic indices were 75.02 ± 4.76 (mesocephalic) in males and 73.75 ± 5.13 (dolicocephalic) in females. We conclude that Yoruba males are mesocephalic while Yoruba females are dolicocephalic. Besides, this study also reveals dolicocephalization tending towards mesocephalization amongst Yorubas. These findings will be very useful in forensic science, physical and medical anthropology, and clinical practice, most especially craniofacial surgery as it presents a characteristic feature of the head configuration for this Nigerian race.