SEX RATIO By Nugent, Pam M.S. - April 13, 2013 the proportion of females to males in a given population at a set age. Also called sex distribution. SEX RATIO: "The sex ratio is the number of men to women." Related Psychology Terms OPERATIONAL SEX RATIO MALE-MALE COMPETITION CONCEPTION RATIO T DISTRIBUTION VANDENBERGH EFFECT SEXUAL DIMORPHISM SEX DIFFERENCES SCRAMBLE COMPETITION CRYPTIC FEMALE CHOICE POLYGYNANDRY Cite this page: Nugent, Pam M.S., "SEX RATIO," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/sex-ratio/ (accessed June 24, 2017).