<i>As the economists David Hemenway and Sara Solnick demonstrated in a study at Harvard, many people would prefer to receive an annual salary of $50,000 when others are making $25,000 than to earn $100,000 a year when others are making $200,000.</i><p>I find it more surprising that everyone didn't choose the first option. Even though $100,000 is more than $50,000, in terms of purchasing power it's all about relativity. The more other people earn given the same productivity, the higher prices will be overall and the less purchasing power you'll have.<p>For example, if you gave everyone $10m and I only got $2m.. I'd still be a "millionaire" but inflation would go through the roof and I'd still end up with rather little compared to everyone else.