Religions are organized in a variety of ways. They may resemble an elected autocracy, a parliamentary democracy, or something akin to a monarchy, where heredity plays a primary role. This variation allows for a comparative study of their organization. These differing power arrangements call for...

The standard evolutionary explanation for depression is that being emotionally depressed is adaptive. We argue that being depressed is not adaptive (indeed, quite the opposite), but that the threat of depression for bad outcomes and the promise of pleasure for good outcomes are adaptive because...