Having high levels of the hormone testosterone can make men less generous and more likely to exhibit selfish behaviours, a study has concluded. Psychologists from China and Switzerland measured the brain activity of men while they completed a task involving deciding between generous and selfish options. The team found that men who had been given additional testosterone three hours before completing the task tended to select the more selfish options. Having high levels of the hormone testosterone can make men less generous and more likely to exhibit selfish behaviours, a study has concluded. Values for the reward in the selfish option ranged from 130–290 CNY (£14–32), while the generous option was fixed at 130 CNY (£14) for both participant and person.

Source: Daily Mail March 15, 2021 19:01 UTC