It is common knowledge that the brain is responsible for processing signals that trigger social behaviors such as aggression, mating, parenting or dominance. But, men and women tend to have slightly varying responses to the same social stimuli. This is attributable to slight differences in the size of certain dedicated brain parts in males & females.
Studies show that while women have a slightly larger frontal lobe (responsible for regulating emotions), men come with a larger parietal cortex (the part responsible for social behavior). This difference in brain size, coupled with gender-specific regulation of neuronal circuits within brain, result in this behavioral flexibility.