It is widely known that the income gap between the rich and the poor in North America over the past 30 years has evolved from a narrow crack to a yawning fissure. You may be tempted to think that this is only problem for the poor—and that those who have seen their incomes climb have suffered no adverse effects as a result of the divide. New research (incidentally by one of my favourite economists, Robert Frank) shows that rising inequality is driving up the divorce rate and it isn’t poverty that is the culprit; it is the constant pursuit of keeping up with your neighbours.

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