# A thank-you that lasts until tomorrow

Your partner refills your coffee before you ask, or takes the dog out on the night you got home late. Two feelings can show up after a moment like that. One is thanks. The other is a quiet ledger entry: now I owe them one.

They feel close, and they often arrive together. In one study of couples, they did very different things to the relationship.

## Two weeks of bedtime notes

Sara Algoe, Shelly Gable and Natalya Maisel asked [67 couples who lived together to fill out a short form every night for two weeks](https://greatergood.berkeley.edu/images/uploads/Algoe-Gable-Maisel-2010-Its-the-little-things.pdf), each partner on their own. Did your partner do something thoughtful for you today? Did you do something thoughtful for them? How grateful did you feel because of what they did, and how indebted? How did the relationship feel today? They published the results in 2010 as [It's the little things](https://doi.org/10.1111/j.1475-6811.2010.01273.x), and the [full paper](https://greatergood.berkeley.edu/images/uploads/Algoe-Gable-Maisel-2010-Its-the-little-things.pdf) is free to read.

The first thing the diaries show is how often these moments slip by. Thoughtful acts were common, but on the days one partner wrote that they had done something thoughtful, [the other often did not notice](https://greatergood.berkeley.edu/images/uploads/Algoe-Gable-Maisel-2010-Its-the-little-things.pdf).

## Thanks moved the relationship. The debt did not.

When men felt grateful one day, they tended to feel better about the relationship the next day, even after accounting for how it already felt, with both connection and satisfaction rising. For women, the link to next-day satisfaction was only marginal, and the link to connection was small and not statistically significant. Feeling indebted, the owe-them-one feeling, predicted nothing about the next day for either.

Gratitude also reached across the couch. On days one partner felt grateful, the other partner reported feeling more connected and more satisfied with the relationship that same day. A man's sense of indebtedness showed a smaller version of that link for his partner, and it disappeared once gratitude was taken into account.

:::pullquote
Feeling thankful went with a better next day for men. Feeling like you owed them one did not, for men or women.
:::

Algoe later described gratitude as a signal that helps people find a responsive partner, remind themselves they have one, and bind the two of them closer, in a review called [Find, remind, and bind](https://doi.org/10.1111/j.1751-9004.2012.00439.x). The diary is one small look at that idea in daily life.

This is a different moment from the one in [how your partner responds to good news](/blog/how-your-partner-responds-to-good-news). That post is about what happens when you share something good that happened to you. This one is about how you take something good your partner did for you.

## What this does not show

The diary tracked feelings day to day without assigning anyone to feel grateful, so it shows a pattern rather than proof that gratitude causes a better tomorrow. The couples were young, mostly unmarried, living together near one West Coast campus, and already quite happy, which left little room to improve. The next-day links were small. Both held for men; for women, satisfaction was marginal and connection was not significant, and the study did not find a significant difference between men and women. The study also measured the feeling, not whether anyone said thank you out loud.

## Noticing comes first

Many thoughtful acts in this study went unnoticed by the person they were for, so the useful habit starts before any feeling: catch the small thing when it happens. The refilled cup, the errand you did not have to run, the quiet hour they gave you on a hard day.

When you do catch it, pay attention to which feeling arrives. If it is the urge to settle up, to get the next coffee so the score stays even, these diaries did not tie that feeling to a better next day. Plain thanks went with more connection the next day for men, and with more connection that same day for the partner on the other side.