Based on the pioneering work of Smith, Suchanek, & Williams (1988) experimental researchers have concluded that assets markets are prone to bubbles and crashes in experimental settings. Numerous authors employing the SSW framework have incorporated features designed to reduce or eliminate the...

Many tests of asset pricing models address only the pricing predictions — but these pricing predictions rest on portfolio choice predictions which seem obviously wrong. This paper suggests a new approach to asset pricing and portfolio choices, based on unobserved heterogeneity. This approach...