Ed Diener, aka “Dr. Happiness” is a leading researcher in positive psychology who coined the expression “subjective well-being” or SWB as the aspect of happiness that can be empirically measured. He argues for a set level of happiness which is genetically fixed, and has amassed some compelling data showing that external conditions do little to change one’s happiness. His recent research has focused on the relationship between income and happiness, about which he writes: “…over the past 50 years, income has climbed steadily in the United States, with the gross domestic product (GDP) per capita tripling, and yet life satisfaction has been virtually flat. Since World War II there has been a dramatic divergence between real income (after taxes and inflation) and life satisfaction in the United States, and a similar pattern can be seen in the data from other nations, such as Japan.” (“Beyond Money” APA, 2004) While poor people generally report lower life satisfaction, above a certain threshold income does not correlate with happiness, and in fact in a recent study it was found that teenagers from blue-collar familes are happier than those from rich families.