This paper suggests that the decline in equity prices, and thus in Tobin's average q, during the 1970s may be attributable to changes in expected relative factor prices. More specifically, q is shown to be a negative function of the extent to which current relative factor price expectations...

I show that a firm's capital intensity affects the asset pricing implications of investment-specific technology shocks measured by a popular measure, the IMC porfolio. Capital-intensive stocks sorted by the exposure to this measure generate a highly significant average return premium of up to 5%...