During which stage of Erikson's development theory do individuals primarily form long-term relationships?

The stage of Erikson's development theory in which individuals primarily form long-term relationships is Intimacy vs Isolation. This stage typically occurs during young adulthood, when individuals start to focus on establishing deep, meaningful connections with others, such as romantic partnerships and close friendships. The success in forming these intimate relationships leads to feelings of security and connectedness, contributing positively to one’s sense of self and emotional health.

During this period, the challenge is essentially about overcoming the fear of isolation and loneliness—if individuals fail to establish these intimate connections, they may feel isolated and unfulfilled. Thus, the central task at this stage is the ability to create lasting bonds with others, which greatly influences personal and social development throughout life. This emphasis on forming relationships distinguishes this stage from others, making it clear why Intimacy vs Isolation is the answer related to the formation of long-term relationships.