Home Production by Dual Earner Couples and Consumption During Retirement

To study the role of home production in life-cycle behavior, this paper creates a theoretical model in which both spouses in a couple allocate their time between market and home work. It then derives a pair of regression equations for estimating the parameters of the model, and it carries out the estimation using panel data on household net worth and lifetime earnings from the Health and Retirement Study and pseudo-panel data on household consumption expenditures from the Consumer Expenditure Survey. We estimate that the value of forgone home production is roughly 10-15 cents for every dollar that a married man earns, but 30-35 cents per dollar of married women’s market earnings. Our findings imply male labor supply elasticities that are very near zero and female elasticities in the range of 0.50. Our model predicts a substantial decline in measured consumption expenditure at a household’s retirement, and it shows that Euler-equation models of consumption behavior should include terms reflecting home production.

An sS Model with Adverse Selection

We present a model of the market for used cars in which agents face a fixed cost of adjustment, the magnitude of which depend on the degree of adverse selection in the secondary market. We find that, unlike typical models, the sS bands in our model contract as the variance of the shock process increases. We also analyze a dynamic version of the model in which agents are allowed to make decisions that are conditional of the age of a used car. We find that, as a car ages, the lemons problem tends to decline in importance, and the sS bands contract.

Valuing Lost Home Production for Dual-Earner Couples

Economists’ principal tool for studying household behavioral responses to changes in tax and other government policies, and the magnitude and determinants of private saving, is the life—cycle model. The purpose of this paper is to attempt to incorporate into that model one of the most conspicuous changes in the U.S. economy in the last 50 years, the rise in labor market participation for married women. The increased presence of married women in the labor force has obvious benefits: women now earn much more income than they did in the past. On the other hand, working women presumably spend less time doing housework and other types of home production, and the forgone value of time at home reduces the net benefit of their work in the market. Conventional accounts do not provide measurements of the costs of lost home production, but we attempt to use comparisons of household net worth at retirement to deduce valuations indirectly. This paper modifies a standard life—cycle model to include women’s labor supply decisions, estimates key parameters of the new specification, and attempts to assess the significance of rising female labor market participation for aggregate national saving in the U.S. Using panel data from the Health and Retirement Study, we find that the difference between measured labor market earnings for married women and earnings net of the value of lost home production seems moderately small – about 30 percent – and that the corresponding long—run effect on the overall rate of private saving is minor.

Computerized crime linkage systems: A critical review and research agenda

Computerized crime linkage systems are meant to assist the police in determining whether crimes have been committed by the same offender. In this article, the authors assess these systems critically and identify four assumptions that affect the effectiveness of these systems. These assumptions are that (a) data in the systems can be coded reliably, (b) data in the systems are accurate, (c) violent serial offenders exhibit consistent but distinctive patterns of behavior, and (d) analysts have the ability to use the data in the systems to link crimes accurately. The authors argue that there is no compelling empirical support for any of the four assumptions, and they outline a research agenda for testing each assumption. Until evidence supporting these assumptions becomes available, the value of linkage systems will remain open to debate

The effect of prophylactic ankle taping on valgus knee joint moment during a side step cut-maneuver

Limited research evaluating the influence of prophylactic ankle taping on the lower extremity kinetic chain is available. Ankle and knee injury have been documented during quick deceleration and change in direction while running. Anecdotally, clinicians and researchers suggest that the application of prophylactic ankle taping to limit ankle movement does not translate pathogenic forces to the proximal joints. The purpose was to examine the effects of prophylactic ankle taping on valgus/varus joint moment at the knee during the side step cut-maneuver. Results indicate no significant difference (p-value=.60) between valgus/varus knee joint moment between un-taped and taped conditions; -0.37+/-.5 Nm/kg and -0.42+/-.37 Nm/kg, respectively. In conclusion the results suggest prophylactic ankle taping does not significantly influence valgus/varus joint moment at the knee. The overall risk of knee injury associated with a valgus/varus joint moment at the knee remains unchanged during the side step cut-maneuver with the application of prophylactic ankle taping

COOL and Consumers' Willingness to Pay in the Fresh Produce Industry - Some Initial Impressions from the Field

The debate about Country-of-Origin labeling (COOL) has centered on the projected benefits and costs of its implementation. This study uses data from a Vickery auction (n=320) to estimate willingness to pay for COOL. Preliminary findings suggest, on average, consumers value COOL, are not homogenous, and prefer fresh produce grown in the U.S.Food Consumption/Nutrition/Food Safety, International Relations/Trade,