Regarding gender differences, it is known that men tend to display more turbulent, aggressive and dominant tendencies compared to women who display more caring roles , caring and affectionate. Studies have shown that men are three times more likely to have the MAOA-L variation than women. This is mainly because women can be heterozygous or homozygous for the gene, while men are hemizygous because they only have one X chromosome, so they are automatically at a biological disadvantage (Sabol, Hu & Hamer, 1998) . Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay. Notably, aggression is not always associated only with males, as high levels of aggression can be observed in female carriers of the MAOA-H gene as in contrast to male carriers of the MAOA-L, as greater activity is observed in the male amygdala region (Holz et al., 2014). Furthermore, higher hippocampal activation was associated with the materialization of fear and anger in male MAOA-L carriers and female MAOA-H carriers. This may provide further evidence to suggest that negative experiences may provide stimuli for aggressive actions to progress, as it is in this region of the brain that memories and emotions are intensified (Denson et al., 2009). Controversially, the MAOA-L genotype has actually been associated with observable happiness in women. A recent study proclaimed this theory, in which women's happiness levels were measured on a "happiness scale." The data revealed that women who had the MAAO-L gene were happier than those who did not, and there was no association between men and happiness either. detected. This study has not yet been replicated, therefore the accuracy of the experiment cannot be debated (Chen et al., 2013). On the other hand, women may suffer from low estrogen levels during their menstrual period, which is linked to fluctuating MAOA levels causing psychological and emotional stress and violent probabilities (Staniloiu & Marksowitch, 2012). A similar phenomenon can be seen with high testosterone levels and low cortisol levels in men, which have been correlated with social aggression. Both testosterone and cortisol are end products made in the hypothalamus-pituitary-adrenal (HPA) axis and this neuropathological region of the brain is devoted to motivation and reward-seeking pathways. It can therefore be said that high testosterone and low cortisol are a precursor to threatening behaviors and active pursuit of risky behaviors (Terburg, Morgan & Honk, 2009). Overall, it can be argued that continued research is needed on the female aspect of MAOA variation, as most studies to date have primarily focused on male aggression. Clear conclusions cannot therefore be deduced from the available evidence..