"In aggregate models, costs that penalise changes in investment--investment adjustment costs-- have been introduced to help account for a variety of business cycle and asset market phenomena. In this paper, we evaluate empirical evidence for these types of costs using US and UK industry data. We...

We analyze the conditions under which an (S,s) rule may be derived and compare these with alternative rules. We consider the case of labor demand with fixed adjustment costs. The (S,s) rule implies a specific ordering of choices: downward adjustment, non-adjustment and upward adjustment with the...