I've read research that found that the more anonymous a good deed became, the less likely people were to do it. I also remember reading research that found tha

I've read research that found that the more anonymous a good deed became, the less likely people were to do it. I also remember reading research that found that the more guilty a person feels, the more charitable they are in an anonymous setting. This was all years ago, but in general, there are some ways to test why people are motivated to do something.