Patenting and licensing are introduced into the lab-equipment horizontal innovation model of endogenous growth. Patent length is not deterministic, in that patent holders' market power will collapse if and only if their patented goods get successfully imitated. The model is solved in an exact...

Measures of social mobility provide an extra dimension for testing job search models. The present note tests the dynamic model in [Acemoglu, D., 1999. Changes in unemployment and wage inequality: an alternative theory and some evidence. American Economic Review 89, 1259-1278] with respect to...

We present an analytical solution to the lab-equipment R&D growth model with an exogenous rate of imitation and apply it to study the optimal level of intellectual property rights (IPR) protection. This has already been studied in Kwan and Lai (2003); however, a mistake in writing out the...

A vast empirical literature implies that increases in unemployment have an aggravating impact on income inequality, whence international and intertemporal inequality comparisons might be sometimes biased. We show how job-search models can be useful in better understanding this fact. In fact, in...

This paper investigates which properties money-demand functions must satisfy so that they are consistent with Lucas's [Lucas Jr., R.E., 2000. Inflation and welfare. Econometrica 68, 247-274] versions of the Sidrauski and the shopping-time models. We conclude that shopping-time-integrable...

Most estimates of the welfare costs of in ation are devised considering only noninterest- bearing assets, ignoring that since the 80 s technological innovations and new regu- lations have increased the liquidity of interest-bearing deposits. We investigate the resulting bias. Su¢ cient and...