Greg, who lives in the United States, is 23 years old. He has been in college for several years and cannot decide on a major. In Erikson’s terms, he has not established an identity, but rather is in a state of ___.

Role Confusion.

Explanation:

According to Erikson's articulation, 'Identity vs Role Confusion' is elucidated as the phase of psychosocial development in which the adolescents after undergoing a lot of role confusion tend to explore their personal beliefs, principles or values, as well as their goals in life independently and in doing so they develop a sense of their individual self and identity. This is the fifth stage of psychosocial development that occurs between the 12-19 years of age.

As per the question, Greg has not been able to develop an identity during his fifth stage of psychosocial development and rather in a state of 'role-confusion' because he has not been able to decide his 'role' or 'identity' which implies that he's been unable to explore his inner strengths and values through which he can establish his self-identity independently. Thus, it reflects that he is in a stage of 'role-confusion'.