Items Factor 1 (α = 0.876)

Factor loadings

1. If you receive a favor from your friend, you will return a favor as soon as possible to maintain the friendship.

0.822

3. When someone treats you, you think you should treat him/her next time.

0.811

6. When someone does something for you, you should give something back.

0.799

9. You always think about returning a gift when someone gives you something.

0.767

7. When someone gives you something you lost, you return that person a gift.

0.699

5. When someone makes a point of helping you, you feel that you should give that person more than just a gift in return.

0.623

11. Even if it’s a little kindness, it’s important to feel grateful.

0.611

*10. You don’t think it’s necessary to always return a gift no matter what someone has done for you If someone tells you “I owe you one”, you feel embarrassed.

0.588

4. When you find that you have forgotten to return something you borrowed, you feel panicked.

0.510

8. You return gifts even if it’s someone you hate.

0.382