Predictors of Commitment in Relationships

In the context of social psychology, attraction can be analyzed through various frameworks. One influential model is the Investment Model of Commitment, which suggests that the level of commitment in a romantic relationship is influenced by three key factors: satisfaction, the quality of alternatives, and the investment in the relationship.

Consider the following hypothetical scenario: Alex and Jamie have been dating for a year. Alex feels deeply satisfied with the relationship and believes Jamie is the best partner he could have, with few viable alternatives. However, Alex has also invested a significant amount of time and effort into the relationship. In this context, which of the following factors most strongly predicts Alex's commitment to Jamie?