Gender,added-worker effects,and the 2007–2009 recession: Looking within the household

The U.S. recession of 2007–2009 saw unemployment rates for men rise by significantly more than those for women, resulting in the downturn’s characterization as a ‘mancession’. This paper uses data from the Census Bureau’s American Community Survey to reexamine gender-related dimensions of the 2007–2009 recession. Unlike most previous work, we analyze data that connects men’s and women’s employment status to that of their spouses. A difference-in-difference framework is used to characterize how labor-market outcomes for one spouse varied according to outcomes for the other. Results show that that employment rates of women whose husbands were non-employed rose significantly in the recession, while those for people in other situations held steady or fell—consistent with the view that women took on additional bread-winning responsibilities to make up for lost income. However, probabilities of non-participation did not rise by more for men with working wives than they did for other men, casting doubt on ideas that men in this situation made weaker efforts to return to work because they could count on their wives’ paychecks to support the household.     

Elwood Buffa's Pioneering Contributions to Production and Operations Management

Elwood Spencer Buffa, a pioneer in production and operations management (P/OM), passed away in the summer of 2005, leaving his legacy behind. During his academic career Buffa made lasting contributions to teaching and research of P/OM. We review those contributions and their impact on the evolution of the P/OM discipline.     

Infants Show Ratio‐dependent Number Discrimination Regardless of Set Size

Evidence for approximate number system (ANS) representations in infancy is robust but has typically only been found when infants are presented with arrays of four or more elements. In addition, several studies have found that infants fail to discriminate between small numbers when continuous variables such as surface area and contour length are controlled. These findings suggest that under some circumstances, infants fail to recruit either the ANS or object file representations for small sets. Here, we used a numerical change detection paradigm to assess 6‐month‐old infants' ability to represent small values. In Experiment 1, infants were tested with 1 versus 3, 1 versus 2, and 2 versus 3 dots. Infants successfully discriminated 1 versus 3 and 1 versus 2, but failed with 2 versus 3. In Experiment 2, we tested whether infants could compare small and large values with a 2 versus 4 condition. Across both experiments, infants' performance exhibited ratio dependence, the hallmark of the ANS. Our results indicate that infants can attend to the purely numerical attributes of small sets and that the numerical change detection paradigm accesses ANS representations in infancy regardless of set size.     

The Ultimate Uncertainty — Intergenerational Planning

The philosophic and practical aspects of intergenerational planning for a 50-100-year time frame are reviewed, with recognition of its speculative quality. Society's near term choice of future physical pathways based on comparative quantitative benefit/cost/risk analyses of alternatives is usually modified by the intervention of a variety of time-dependent, nontechnical value systems. Further, the continuous competition among society's disparate technical systems, capital investment choices, and planning objectives all contribute to the uncertainty of the intergenerational outcome of any plan. Nevertheless, the quantitative planning process provides an essential base. Benefit/cost/risk projections are discussed for both the case with a historical database and the case without such a historical base. The end-objectives and continuous nature of such benefit/cost/risk analyses are described.     

Reports of Conferences, Institutes, and Seminars

This quarter's column features reports from the New England Library Association Annual Conference; the Pennsylvania Library Association Annual Conference; the Potomac Technical Processing Librarians Annual Meeting; the Charleston Conference; the Brick and Click Libraries Symposium; a NISO Webinar entitled “The Case of the Disappearing Journal: Solving the Title Transfer and Online Display Mystery;” and the American Library Association Midwinter Meeting.     

The social economics of ethical consumption: Theoretical considerations and empirical evidence

Recent years have seen rising discussion of ethical consumption as a means of stemming global warming, challenging unsavory business practices, and promoting other pro-social goals. This paper first lays out a conceptual framework for understanding the spread of ethical consumption, in which heterogeneous preferences and sensitivity to social norms feature centrally. It then presents empirical evidence from a well-known nationally representative survey on factors associated with tendencies to ‘buy ethically’. It is found that, ceteris paribus, people are more likely to buy ethically when others around them do too, consistent with a role of social norms in promoting ethical-consumption behaviors.     

Firm outsourcing decisions: evidence from U.S. foreign trade zones

This article examines the operations of firms located in U.S. foreign trade subzones to study the responsiveness of outsourcing to international cost changes. I find that firms reduce their reliance on foreign inputs when dollar depreciation increases the relative price of imported inputs. The effect is pervasive across industries and is economically significant. In addition, firms that rely more heavily on imported intermediate inputs reduce their overall shipments when dollar depreciation elevates their imported, input costs. However, the magnitude of the shipments effect is economically small, suggesting that firms respond to exchange rate movements by adjusting their operations on other dimensions.     

Quantitative Cancer Risk Estimation for Formaldehyde

Of primary concern are irreversible effects, such as cancer induction, that formaldehyde exposure could have on human health. Dose-response data from human exposure situations would provide the most solid foundation for risk assessment, avoiding problematic extrapolations from the health effects seen in nonhuman species. However, epidemiologic studies of human formaldehyde exposure have provided little definitive information regarding dose-response. Reliance must consequently be placed on laboratory animal evidence. An impressive array of data points to significantly nonlinear relationships between rodent tumor incidence and administered dose, and between target tissue dose and administered dose (the latter for both rodents and Rhesus monkeys) following exposure to formaldehyde by inhalation. Disproportionately less formaldehyde binds covalently to the DNA of nasal respiratory epithelium at low than at high airborne concentrations. Use of this internal measure of delivered dose in analyses of rodent bioassay nasal tumor response yields multistage model estimates of low-dose risk, both point and upper bound, that are lower than equivalent estimates based upon airborne formaldehyde concentration. In addition, risk estimates obtained for Rhesus monkeys appear at least 10-fold lower than corresponding estimates for identically exposed Fischer-344 rats.