According to Erikson's theory of psychosocial development, during early adulthood (ages 20-40 approximately) individuals experience the sixth stage of psychosocial development known as I</span>ntimacy versus Isolation. During this stage of development, individuals are concerned about find an appropriate lifelong partner. At this stage of psychosocial development, <span>individuals are also worried that they will be lonely if they fail to find a partner. </span>
The answer is evolutionary psychology. It basically states that women are more selective because they produce a limited number of gametes, whereas men produce sperm their whole lives.
