Final answer:
Erikson viewed the formation of identity during adolescence as essential for the development of intimacy in young adulthood, with successful identity formation helping to prevent loneliness and emotional isolation.
Step-by-step explanation:
Erikson saw the formation of identity as a prerequisite for the development of intimacy in young adulthood. After adolescents develop a strong sense of self in the stage of identity versus role confusion, they are prepared to share their lives with others and establish intimate relationships. The ability to form healthy, intimate relationships after achieving a positive self-concept is crucial, as adults who do not develop this in adolescence may experience feelings of loneliness and emotional isolation.