Periodic sharp sustained increases and then reversals in asset prices lead many to posit irrational price bubbles. The general case for irrationality is that real asset prices simply have moved too much given the future real cash flows the assets are reasonably likely to produce. A corollary for...

Ownership patterns for young (under 45) married couples are striking in two respects. First, ownership rates rise dramatically with age: couples 35- 44 consistently have ownership rates nearly 50 percentage points higher than couples under 25. Second, half of the sharp ownership gains of young...