Do Chronotypes Really Matter for Romantic Relationships?

In a word, yes, chronotypes can matter for relationships. However, the mechanisms behind chronotype similarity and relationship satisfaction are complex.

• Couples who have similar chronotypes, for example both morning types or both evening types, are more likely to be satisfied with their relationships than those who have different chronotypes (e.g., morning type and evening type).
• Having different chronotypes could be beneficial in some cases like taking turns to care for a young child. While one partner sleeps at her normal hours, the other could be “on duty” to watch over their child.