With Thanksgiving right around the corner, our thoughts naturally turn toward gratitude. The list of things for which we are grateful can be pretty long. And, of course, I’m sure you have read the many studies showing how being grateful is good for our health. But did you know being thankful can actually cause a surge of health within our entire community?

Simple act of giving can transform communities.

I recently read a research paper from the National Taiwan University on what’s called, upstream reciprocity. This study reveals a ripple effect occurring from the simple act of giving, potentially transforming an entire community.

Here’s how it works: when someone receives a gift or favor from another it typically produces gratitude on the part of the recipient. The study calls this downstream reciprocity. We see this displayed frequently during the holidays by donors giving to nonprofit organizations, helping serve Thanksgiving dinner to the homeless, and giving turkeys to the Foodbank.

Of course, the nonprofits as well as the recipients are appreciative. However, in addition to givers feeling good about their generosity and recipients feeling grateful for the assistance, the act of being grateful creates a third reality called upstream reciprocity.

It's more than just paying it forward.

According to the study, when someone feels gratitude toward another, that person is more likely to become a giver himself—often to an unrelated third party. The original giver set an example of generosity; the recipient felt a positive feeling of gratitude toward the giver; therefore, the recipient feels drawn to give to others.

The study explains that this phenomenon occurs “by broadening the beneficiary’s perspective toward others and thus making the beneficiary feel aligned with the benefactor and want to give to others who may be strangers.”

As a result, gratitude can lead to a chain reaction of upstream reciprocity, often called paying it forward, thereby strengthening entire communities. Clearly, gratitude spurred by generosity can spread far and wide in social networks. 

Inspiring stories about generosity abound.

The New York Times recently ran a story citing a dramatic increase of customers at fast-food drive through establishments anonymously paying for the customer in line behind them. Perhaps one of the largest examples of drive-through generosity occurred at Tim Horton’s in Winnipeg, Manitoba, last December when 227 cars in a row paid it forward. Yet this goodness gone viral is not uncommon, fast food employees report that it’s becoming a frequent practice for drive-through customers to pay for the car behind them. The reason appears to support the findings in the study about downstream reciprocity.

“I just do it out of kindness rather than for recognition,” explained one customer. She said her kindness stemmed from feeling appreciative for benevolence others have shown her in the past.

Research reveals hidden aspects of gratitude.

A paper published in the Journal of Happiness Studies reported the positive psychological perspective of gratitude makes people feel more socially attached to others beyond themselves. As the paper notes, “Gratitude may cause individuals to transfer the goodwill they previously received to people other than their benefactors.” 

The study states further that focusing on the delight we create in others increases our own joy. Without a doubt, generosity and gratitude are contagious, with far-reaching ripple effects. “When someone shows me such unexpected thoughtfulness, it restores my faith in the love and compassion of the human spirit and I want to join in on the fun,” explained one study participant.

So, the next time you give to a nonprofit or an individual, your gift may have a much larger impact than you realize.

Your generosity can help strangers you never meet.

And the next time, you are the recipient of someone’s generosity, I invite you to think of the principle of upstream reciprocity and look for ways to pay the kindness forward to others—strangers you may not even know. Being aware of the secret ripple effect of gratitude and intentionally looking for ways to use it can transform our entire community—and increase your own joy in the process.

This study makes me want to look closer at my own gratitude list this Thanksgiving season—and throughout the year. I want to notice and appreciate the generosity of those who donate financially to our local nonprofits, those who volunteer for our plethora of causes, reporters who shine the spotlight on good works, foundations who read over our grant requests, and the important work of our social media friends.

Our own giving can start a secret ripple effect.

And I want to examine my own giving. Is it intentional? Am I paying it forward? In addition to being generous to our nonprofits, I want to remember that the practice of charitable giving and receiving has immense potential to transform our community through the principle of upstream reciprocity.

It’s contagious, so jump in. Together our gratitude can make an enormous ripple effect in our community.