The Effect of a Surprise Reward on Reciprocity

When you join the lab, you get access to a community forum where you can communicate with all of the other 199 members and myself. You also get access to all of the educational material that I've ever made and ever make. Every month, I record a 30 minute retro, which is a look behind the scenes at how I'm running my business. This surprise reward boosts reciprocity. It reminded me of another study on reciprocity and charitable donations. And this is a study from 2007. Armin Falk from the University of Bonn sent 9,846 genuine letters asking for donations to a charity working in developing countries. Those who received the surprise gifts were significantly more likely to donate.