An emotionally mature man seldom indulges in irresponsible littering and other slovenly behavior. Instead, he always make sure to clean after his meal and any other activity. He knows that if he doesnt do it, no one else will do it for him thats one of the biggest differences between an immature boy and a grown-up man. If youve ever wondered why your guy burps and farts and then finds it funny, heres the reason men dont mature until theyre around 43. By comparison, the average age at which women mature is 11 years earlier, at age 32. According to the study, commissioned by nickelodeon uk, the average man doesnt reach full emotional maturity until age 43, while women mature by age 32. The study was released monday and conducted just in time for the results to launch with a new nickelodeon uk comic series called wendell & vinnie, which features a 30-year-old bachelor who suddenly becomes the legal guardian of his mature 12. At what age does a man fully emotionally mature? By corrina horne. The media stereotype is that men are afraid of commitment, enjoy crass jokes, and see family and children as a nuisance. men grow up at 43 - 11 years later than women men finally grow up at the age of 43 - a full 11 years after women mature, according to a new survey. Females tend to mature few years earlier, or hit puberty, dont know if it applies to brains also. Becoming a real, mature man means giving up the need to conquer and vanquish and being okay with letting others get their way.