that could quickly change afterwards when they are trying to find a full-time job with little direction as to where to start their career. Only after self-efficiency has been reached and after a long period of freedom has experienced, that is when emerging adults will be ready to become adults and take on the full responsibility. Established Adulthood Established Adulthood is the proposed range of approximately 30 to 45, complementing Emerging Adulthood. They are essentially a combination of the later years of young adulthood (30-35), extending to the early years of middle adulthood (40-45). It is described as the most challenging yet most rewarding phase of adulthood. Arnett states that "During this period of the life span most adults must negotiate the intersecting demands of progressing in a chosen career, maintaining an intimate partnership, and caring for children. Successes or difficulties in meeting these simultaneous demands have the potential to profoundly influence the direction of a person's adult life." History In the early 1960s, the average age that young adults were marrying was 20.3 years old for women and 22.8 years old for men, which included a child or expecting a child and/or finishing up education. Young mothers were settling into their full-time mothers' roles, whereas fathers/husbands had established themselves into their working careers. In the 1970s the average age for childbirth started to increase, by 2010 it rose to 26 years for women and 28 for men. Jeffrey Arnett pointed out four revolutions that changed everything people knew in the 1960s and 70s and contributed to the existence of the emerging adulthood stages of life—the technology revolution, the sexual revolution, the women's movement, and the youth movement. The Technology Revolution: This revolution transformed the United States' (and other industrializing economies) from manufacturing economies to knowledge and skill-based economies. After computers became widespread throughout homes and workplaces, more education was required for employment. This prompted younger adults to spend more and more time in school, rather than working full time or starting families. These are both characteristics generally associated with "full-on" adulthood. The Sexual Revolution: The sexual revolution, which began in the early 1960s, led to emerging adulthood because young adults began having sexual relations before marriage or having children. This was, in part, due to the development of more effective methods of contraception. For example, in 1964, birth control became another option for young adults. This resulted in postponing