If you want boost your romantic relationship, and achieve and maintain satisfaction with your partner, show some gratitude.

Positive thinking has been shown to have a longstanding constructive effect on our emotional life. Extending these positive emotions and gratitude to our romantic partners can increase the benefit of positive thinking tenfold, say the authors of a new study in Personal Relationships. 

Lead author Dr. Sara Algoe says, "Feelings of gratitude and generosity are helpful in solidifying our relationships with people we care about, and benefit to the one giving as well as the one on the receiving end." The authors propose that the emotion of gratitude is adaptive, and ultimately helps us to find, remind, and bind ourselves to people who seem to care about our welfare.

Events such as one partner planning a celebratory meal when the other partner gets a promotion, taking the children to the zoo so the other partner can have some quiet time, or stopping to pick up the other partner's favorite coffee drink are each examples of gratuitous behavior that could strengthen romantic relationships, if the recipient feels grateful in response.

Researchers studied sixty-five couples who were already in ongoing, satisfying, and committed relationships. They tracked the day-to-day fluctuations in relationship satisfaction and connection for each member of the relationship. These little, everyday, ups and downs in relationship quality were reliably marked by one person's feelings of gratitude. The effects on the relationship were noticed even the day after feeling the gratitude was expressed. This research thus suggests that even everyday gratitude serves an important relationship maintenance mechanism in close relationships, acting as a booster shot to the relationship.

The authors of the study claim that this emotional response may be beneficial for relationships that are on the rocks, or in a context where people already have solid and satisfied relationships—a little gratitude may go a long way toward maintaining the connection. By temporarily changing the perspective on the relationship, everyday gratitude may work as a booster shot for ongoing romantic relationships.

However, the authors are quick to warn that the everyday emotional response of indebtedness did not facilitate relationship maintenance. Indebtedness implies a need to repay kind gestures. This may work to help to keep relationships in working order, but will not yield as many benefits or long-term growth in the relationship as an expression of gratitude. Algoe says, "Gratitude triggers a cascade of responses within the person who feels it in that very moment, changing the way the person views the generous benefactor, as well as motivations toward the benefactor. This is especially true when a person shows that they care about the partner's needs and preferences."

Citation: Sara B. Algoe, Shelly L. Gable, Natalya C. Maisel, 'It's the Little Things: Everyday Gratitude as a Booster Shot for Romantic Relationships. Personal Relationships', 2010; doi: 10.1111/j.1475-6811.2010.01273.x