In spite of its checkered intellectual history, and in spite of the myriad proposals of alternative models that claim both to account for the range of human behavior and to dispense with the need for selection above the organism level, a multilevel selection framework allowing for biological as...

Between 1919 and 1946 bankruptcy rates in the U.S. traced out an inverted U-shaped curve, rising during the 1930s as income levels fell, and then plummeting during the Second World War in the face of both rising income and falling debt levels. This paper explores these relationships...

Between 1919 and 1946 bankruptcy rates in the United States traced out an inverted U-shaped curve, rising during the 1920s as debt levels increased, remaining high in the 1930s as income levels fell, and then plummeting during the Second World War in the face of both rising income and falling...