One hundred married couples – residents of Kharkiv – have been tested for the level of aggression (Assinger’s test) and empathy (Mehrabian–Epstein test) and undergone genetic typing by SNP rs 2235186 Õ-linked gene of monoamine oxidase ÌÀÎ-À, a substitute for Ñ/Ò. In men, the average values of the aggression index are higher, and the empathy index is lower than in women. Ñ (ðñ=0,58) is the major allele in Kharkov population. Its frequency in the sample of women is 0,56, in the sample of men – 0,61. In men with genotype Ñ, the average level of aggression is x=36,5 points (CI=35,8–37,2), for genotype Ò the value is higher – x=39,9 points (CI=39,3–40,5). By the level of empathy, men with genotype Ñ (x=6,0 (CI=5,5–6,5)) dominate over men with genotype Ò (x=4,3 points). In homozygous women, the average indices of aggression are: with genotype ÑÑ – 34,8 points (CI=33,9–35,7), with genotype ÒÒ – 38,8 points (CI=37,6–40,0). For the level of empathy, these values are: ÑÑ – 6,4 points (CI=5,8–7,0), ÒÒ – 5,6 (CI=4,8–6,4). In heterozygous women (ÑÒ), these indices have an intermediate value: the average level of aggression is 36,7 points (CI=36,0–37,4), that of empathy – 5,3 points (CI=4,8–5,8). There is positive marital assortativity for the said genotypes, expressed by more frequent representation of Ñ×ÑÑ and Ò×ÒÒ couples, and scarcer representation of Ñ×ÒÒ and Ò×ÑÑ couples than with panmixia.