This paper examines the efficiency of the Jordanian stock exchange and the relationship between returns and conditional volatility. An AR(1)-GARCH(1,1)-M model is estimated for five daily indices. The empirical results indicate significant departures from the efficient market hypothesis; in only...

Quality-adjusted price indexes based on a discrete choice model and a weighted hedonic function are estimated using market data for Liquid Crystal Display (LCD) TVs obtained from a large Internet price comparison service in Japan. Implicit values of attributes were used to unify marginal values...

Empirical studies on the earnings effects of tobacco use have found significant wage penalties attached to smoking. This article produces evidence that suggests that these estimates are significantly upward biased. The bias arises from a general failure in the literature to control for past...