The study looked at how people share money in a game called the dictator game. They found that players decide how much to give based on the total money available, not just what's in one game. Players don't always share equally among recipients. The presence of an observer didn't affect how much money was given. The way the game is set up can influence how much money is shared. Giving in the dictator game is guided by personal and social rules that limit selfish behavior.