Evaluation of non-metric traits of supraorbital region in sexual dimorphism: A study in 60 adult human skulls

Sex determination is one of the essential prerequisites for identification of an individual. The skull is probably the second best area of the skeleton for determining sex following pelvis. Diverse techniques for sexing crania are based either on visually determinable descriptive features of the cranium or on exact measurements of various parts of cranium and their ratios. Inferring from observations based on morphological indicators depends largely upon the experience of the observer. In the present study, skulls of 60 individuals of known sex (30 of either) of Indian Punjab region were studied. A series of three non metric traits of supraorbital region (glabella development, superciliary ridge development, zygomatic trigone development) were taken for the study and their significance in sex determination was established. The statistical method used in the present study is Logit and Probit regression methods.After applying this method 91.5% of the skulls were correctly classified.