Random coefficient regression and the long-run phillips curve for the U.S.

This research suggests that a random coefficient regression model is well-suited for analyzing long-run versus short-run movements in wages and unemployment and is an improvement over some empirical techniques typically used.     

Robert M. Collins. Transforming America: Politics and Culture during the Reagan Years

Robert Collins has written two superb books treating modernAmerican business history—The Business Response to Keynes(1981), and More: The Politics of Growth in Postwar America(2000). In this, his most recent and elegantly written book,he takes on the rather more slippery, amorphous cultural historyof the period. He even dives undaunted into that most murkyphenomenon, "postmodernism." There, he has some delightful thingsto say about "the therapeutic culture" and the "self-esteem"fad that it produced. In his treatment     

Mixed-effects models for health care longitudinal data with an informative visiting process: A Monte Carlo simulation study

Electronic health records are being increasingly used in medical research to answer more relevant and detailed clinical questions; however, they pose new and significant methodological challenges. For instance, observation times are likely correlated with the underlying disease severity: Patients with worse conditions utilise health care more and may have worse biomarker values recorded. Traditional methods for analysing longitudinal data assume independence between observation times and disease severity; yet, with health care data, such assumptions unlikely hold. Through Monte Carlo simulation, we compare different analytical approaches proposed to account for an informative visiting process to assess whether they lead to unbiased results. Furthermore, we formalise a joint model for the observation process and the longitudinal outcome within an extended joint modelling framework. We illustrate our results using data from a pragmatic trial on enhanced care for individuals with chronic kidney disease, and we introduce user-friendly software that can be used to fit the joint model for the observation process and a longitudinal outcome.     

An experimental comparison of two search models

Summary. We report an experiment designed to investigate markets with consumer search costs. In markets where buyers are matched with one seller at a time, sellers are predicted to sell at prices equal to buyers' valuations. However, we find sellers post prices that offer a more equal division of the surplus, and these prices tend to be accepted, while prices closer to the equilibrium prediction are rejected. At the other extreme, sellers are predicted to sell at a price equal to marginal cost when buyers are matched with two sellers at a time. Here, we find prices are closer to, but still significantly different from, the equilibrium prediction. Thus, our results support theoretical comparative static, but not point, predictions.     

An Economic Analysis of the Language Market

Two savages, who had never been taught to speak, but had been brought up remote from the societies of men, would naturally begin to form that language by which they would endeavor to make their mutual wants intelligible to each other, by uttering certain sounds whenever they meant to denote certain objectives.—Adam Smith. The consequences of Adam Smith's prediction are examined by Abrams in a modern context.     

The future of the elderly

Between now and the 1990s the population of most Western European countries will, on present fertility and mortality rates, show little increase. However, the proportion aged 65 or more will increase; this will be almost entirely due to the 20–25% increase in the numbers aged 75 or more. At the same time there will be pressure to lower the retirement age so as to avoid unemployment among the young. Schemes to encourage early retirement have had little success; without considerable economic growth the conflict between the interests of the elderly and the young will inevitably become more acute.