I'll spell it out in case someone else truly doesn’t understand since you're just determined not to.
Pro-social actions are taken more often if you believe others will also take pro-social actions. The best way to do it is to believe you're the same as other people and that other people are good, and that you're not the patsy when you take a pro-social decision and others don't. Because you're the next guy for someone.
Pro-social actions are taken more often if you believe others will also take pro-social actions. The best way to do it is to believe you're the same as other people and that other people are good, and that you're not the patsy when you take a pro-social decision and others don't. Because you're the next guy for someone.