The world economy is going through its biggest transformation in a relatively short space time. There have been many explanations for this phenomenon but the unprecedented scale and pace of this change and, most crucially, its implications, still seems little understood. In turn, there has been...

Powerful currents have reshaped the structure of families over the last century. There has been (i) a dramatic drop in fertility and greater parental investment in children; (ii) a rise in married female labor-force participation; (iii) a significant decline in marriage and a rise in divorce; (iv)...