What does the need complementarity theory state about relationships?

Need complementarity theory suggests that individuals in a relationship often seek partners whose needs complement their own, particularly when those needs are opposite. This theory posits that people are attracted to those who fulfill needs they themselves may lack, creating a balance within the relationship. For instance, a person who is aggressive and decisive may be drawn to someone who is more nurturing and accommodating. This interplay can lead to a dynamic that is attractive because each partner brings something different to the relationship, contributing to personal growth and emotional satisfaction.

In contrast, preferences for partners with similar needs align more with the similarity-attraction hypothesis, which suggests that individuals are drawn to those who share similar traits and values. Therefore, while similarity can create comfort and ease, need complementarity specifically highlights the attraction driven by opposite needs.

Moreover, the concept that relationships thrive without mutual need fulfillment fails to consider the essence of need complementarity, where the fulfillment of each other's needs is often crucial for relationship satisfaction. Lastly, the notion that all relationships depend on financial compatibility is overly simplistic and does not cover the broad spectrum of emotional, psychological, and social factors that play significant roles in relationship dynamics.