Abstract
The second-to-fourth-digit ratio (2D:4D) may be related to prenatal testosterone and estrogen levels and pubertal face growth. Several studies have recently provided evidence that 2D:4D is associated with other-rated facial masculinity and dominance, but not with facialmetric measures of masculinity. We found that localized face shape differences, shown here to be sexually dimorphic and related to ratings of dominance, were associated with direct and indirect measurements of 2D:4D. In this study we examined various localized features of the face, showing nose width, jaw angle, and lip height to be sexually dimorphic. We then had faces rated for dominance and saw that the most dimorphic characteristics were those most associated with rated dominance, with typically masculine characteristics tending to be associated with high ratings of dominance. Finally, 2D:4D measurements were made using three different techniques. High (feminine) values of 2D:4D were associated with feminine facial characteristics in women, but not in men. It was concluded that certain aspects of facial development are governed by factors that are established prenatally. These aspects may be associated with perceptions of the self by others that are important in the social environment, particularly in terms of intra-sexual competition and mate acquisition.
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References
Cohen, J. (1992). A power primer. Psychological Bulletin, 112, 155–159.
Cunningham, M. R., Barbee, A. P., & Pike, C. L. (1990). What do women want? Facialmetric assessment of multiple motives in the perception of male facial physical characteristics. Journal of Personality and Social Psychology, 59, 61–72.
Farkas, L. G. (1981). Anthropometry of the head and face in medicine. New York: Elsevier.
Faurie, C., Pontier, D., & Raymond, M. (2004). Student athletes claim to have more sexual partners than other students. Evolution and Human Behavior, 25, 1–8.
Fink, B., Grammer, K., Mitteroecker, P., Gunz, P., Schaefer, K., Bookstein, F. L., et al. (2005). Second to fourth digit ratio and face shape. Proceedings of the Royal Society of London, Series B, 272, 1995–2001.
Firman, R., Simmons, L. W., Cummins, J. M., & Matson, P. L. (2003). Are body fluctuating asymmetry and the ratio of 2nd to 4th digit length reliable predictors of semen quality? Human Reproduction, 18, 808–812.
Hennessy, R. J., McLearie, S., Kinsella, A., & Waddington, J. L. (2005). Facial surface analysis by 3D laser scanning and geometric morphometrics in relation to sexual dimorphism in cerebral-craniofacial morphogenesis and cognitive function. Journal of Anatomy, 207, 283–295.
Kilgallon, S. J., & Simmons, L. W. (2005). Image content influences men’s semen quality. Biology Letters, 1, 253–255.
Koehler, N., Simmons, L. W., & Rhodes, G. (2004a). How well does second-to-fourth-digit ratio in hands correlate with other indications of masculinity in males? Proceedings of the Royal Society of London, Series B, 271, S296–S298.
Koehler, N., Simmons, L. W., Rhodes, G., & Peters, M. (2004b). The relationship between sexual dimorphism in human faces and fluctuating asymmetry. Proceedings of the Royal Society of London, Series B, 271, S233–S236.
Kondo, T., Zakany, J., Innis, J., & Duboule, D. (1997). Of fingers, toes and penises. Nature, 390, 29.
Kozieł, S., & Pawłowski, B. (2003). Comparison between primary and secondary mate markets: an analysis of data from lonely hearts columns. Personality and Individual Differences, 35, 1849–1857.
Lutchmaya, S., Baron-Cohen, S., Raggatt, P., Knickmeyer, R., & Manning, J. T. (2004). 2nd to 4th digit ratios, fetal testosterone and estradiol. Early Human Development, 77, 22–28.
Manning, J. T., Barley, L., Walton, J., Lewis-Jones, D. I., Trivers, R. L., Singh, D., et al. (2000). The 2nd:4th digit ratio, sexual dimorphism, population differences and reproductive success: Evidence for sexually antagonistic genes? Evolution and Human Behavior, 21, 163–183.
Manning, J. T., Fink, B., Neave, N., & Caswell, N. (2005). Photocopies yield lower digit ratios (2D:4D) than direct finger measurements. Archives of Sexual Behavior, 34, 329–333.
Manning, J. T., Henzi, P., Venkatramana, P., Martin, S., & Singh, D. (2003). Second to fourth digit ratio: ethnic differences and family size in English, Indian and South African populations. Annals of Human Biology, 30, 579–588.
Manning, J. T., Scutt, D., Wilson, J., & Lewis-Jones, D. I. (1998). The ratio of 2nd to 4th digit length: A predictor of sperm numbers and concentration of testosterone, leutenizing hormone and oestrogen. Human Reproduction, 13, 3000–3004.
Manning, J. T., Stewart, A., Bundred, P. E., & Trivers, R. L. (2004). Sex differences in the 2nd to 4th digit ratio of children. Early Human Development, 80, 161–168.
Manning, J. T., & Taylor, R. P. (2001). Second to fourth digit ratio and male ability in sport: implications for sexual selection in humans. Evolution and Human Behavior, 22, 61–69.
McFadden, D., & Shubel, E. (2002). Relative lengths of fingers and toes in human males and females. Hormones and Behavior, 42, 492–500.
Miller, G. F. (2000). The evolution of music through sexual selection. In N. L. Wallin, B. Merker, & S. Brown (Eds.), The origins of music (pp. 329–360). Cambridge, MA: MIT Press.
Neave, N., Laing, S., Fink, B., & Manning, J. T. (2003). Second to fourth digit ratio, testosterone and perceived male dominance. Proceedings of the Royal Society of London, B., 270, 2167–2172.
Nute, S. J., Orth, M., Moss, J. P., & Orth, D. (2000). Three-dimensional facial growth studied by optical surface scanning. Journal of Orthodontics, 27, 31–38.
Penton-Voak, I. S., & Chen, J. Y. (2004). High salivary testosterone is linked to masculine male facial appearance in humans. Evolution and Human Behavior, 25, 229–241.
Penton-Voak, I. S., Jones, B. C., Little, A. C., Baker, S., Tiddeman, B., Burt, D. M., et al. (2001). Symmetry, sexual dimorphism in facial proportions and male facial attractiveness. Proceedings of the Royal Society of London, Series B, 268, 1617–1623.
Perrett, D. I., Lee, K. J., Penton-Voak, I. S., Rowland, D. R., Yoshikawa, S., Burt, D. M., et al. (1998). Effects of sexual dimorphism on facial attractiveness. Nature, 394, 884–887.
Peters, M., Mackenzie, K., & Bryden, P. (2002). Finger length and distal finger extent patterns in humans. American Journal of Physical Anthropology, 117, 209–217.
Peters, J., Shackelford, T. K., & Buss, D. M. (2002). Understanding domestic violence against women: using evolutionary psychology to extend the feminist functional analysis. Violence and Victims, 17, 255–264.
Phelps, V. R. (1952). Relative index finder length as a sex-influenced trait in man. American Journal of Human Genetics, 4, 72–85.
Pound, N., Penton-Voak, I. S., & Kampe, V. (2005, June). Facial masculinity is not associated with digit masculinity. Paper presented at the annual conference of the Human Behavior and Evolution Society, Austin, Texas.
Sluming, V. A., & Manning, J. T. (2000). Second to fourth digit ratio in elite musicians: Evidence for musical ability as an honest signal of male fitness. Evolution and Human Behavior, 21, 1–9.
Snodell, F., Nanda, R. S., & Currier, G. F. (1993). A longitudinal cephalometric study of transverse and vertical craniofacial growth. American Journal of Orthodontics and Dentofacial Orthopedics, 104, 471–483.
Tiddeman, B. P., Burt, D. M., & Perrett, D. I. (2001). Prototyping and transforming facial texture for perception research. IEEE Computer Graphics Applications, 21, 42–50.
Verdonck, A., Gaethofs, M., Carels, C., & de Zegher, F. (1999). Effect of low-dose testosterone treatment on craniofacial growth in boys with delayed puberty. European Journal of Orthodontics, 21, 137–143.
Acknowledgements
The authors thank C. Hassell, R. Karadia, and A. D. Tufte for help with data collection, S. C. Roberts for allowing access to the facial photographs taken under condition set one, K. Kaskatis for advice on the sexual selection of musical ability, and D. I. Perrett and B. P. Tiddeman for the use of the Psychomorph program. We also thank three anonymous reviewers and B. Fink and J. T. Manning for their helpful comments. A. C. L. is supported by a Royal Society University Research Fellowship.
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Burriss, R.P., Little, A.C. & Nelson, E.C. 2D:4D and Sexually Dimorphic Facial Characteristics. Arch Sex Behav 36, 377–384 (2007). https://doi.org/10.1007/s10508-006-9136-1
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DOI: https://doi.org/10.1007/s10508-006-9136-1