Birthday Party

Consider the office birthday party and your slice of cake looks slightly smaller than some. Eh, probably no big deal. But now [imagine:engine] instead of cake, everyone got cash. And you got three [bucks,:trucks] while some others got four. Researchers did this experiment. One group of subjects got cake slices of varying sizes. The [other:another] group got cash. Everyone could see what others in their group received. And those in the cash group who received less money than others were upset. But for the cake group, where the size of slices was [harder:partner] to measure, everyone was equally happy.