Two theories of historical materialism

Theory and Society -     

Gun injury and mortality: the delinquent backgrounds of juvenile victims

Serious injuries and deaths of three samples of boys were examined in an inner-city, longitudinal study. By age 19, almost 1 in 10 of the 506 participants in the oldest sample had been seriously wounded or killed. Two thirds of this group had been either wounded or killed by guns. Victims, compared to controls, tended to have a history of engaging in serious delinquency, gang fights, and selling drugs. They also tended to carry guns. The delinquent lifestyle of the victims was also evident from their court records. Victims tended to do poorly academically in school, received poorer parental supervision, had poorer communication with their parents, and had a long history of behavior problems.     

Hard stories in the workplace

Relationships between family caregivers and professional health care providers typically begin during an intensely painful and stressful time. This article examines the literature on professional attitude and response to suffering with particular emphasis on how exposure to hard stories affects the development and quality of alliances with family caregivers. First person accounts from a qualitative, phenomenological study conducted with mothers of children with acquired physical disabilities are used to illustrate the perspectives of caregivers and the qualities they identify as contributing to competent, meaningful, and mutual relationships that allow for bearing witness to hard stories.     

Man Up,Man Down: Race–Ethnicity and the Hierarchy of Men in Female‐Dominated Work

Scholars have largely overlooked the significance of race and socioeconomic status in determining which men traverse gender boundaries into female‐dominated, typically devalued, work. Examining the gender composition of the jobs that racial minority men occupy provides critical insights into mechanisms of broader racial disparities in the labor market—in addition to stalled occupational desegregation trends between men and women. Using nationally representative data from the three‐year American Community Survey (2010–2012), we examine racial/ethnic and educational differences in which men occupy gender‐typed jobs. We find that racial minority men are more likely than white men to occupy female‐dominated jobs at all levels of education—except highly educated Asian/Pacific Islander men—and that these patterns are more pronounced at lower levels of education. These findings have implications for broader occupational inequality patterns among men as well as between men and women.     

Analysis of large sets of ranking data

Various procedures, mainly graphical are presented for analyzing large sets of ranking data in which the permutations are not equally likely. One method is based on box plots, the others are motivated by a model originally proposed by Mallows. The model is characterised by two parameters corresponding to location and dispersion. Graphical methods based on Q-Q plots are also discussed for comparing two groups of judges. The proposed methods are illustrated on an empirical data set.     

Efficiencies in Variance Estimation for Complex Survey Data

Data from complex survey designs require special consideration, with regard to variance estimation and analysis, because of design components that include unequal selection probabilities, stratification, and clustering. Using data from the National Medical Care Expenditure Survey, which is characterized by a complex survey design, four variance estimation programs are compared: SESUDAAN/RATIOEST, SUPERCARP, PSALMS, and HESBRR. The comparisons concentrate on program capabilities, computational efficiency, and user facility.     

Statistics of Primes (and Probably Twin Primes) Satisfy Taylor's Law from Ecology

Taylor's law, which originated in ecology, states that, in sets of measurements of population density, the sample variance is approximately proportional to a power of the sample mean. Taylor's law has been verified for many species ranging from bacterial to human. Here, we show that the variance V(x) and the mean M(x) of the primes not exceeding a real number x obey Taylor's law asymptotically for large x. Specifically, V(x) ～ (1/3)(M(x))² as x → ∞. This apparently new fact about primes shows that Taylor's law may arise in the absence of biological processes, and that patterns discovered in biological data can suggest novel questions in number theory. If the Hardy-Littlewood twin primes conjecture is true, then the identical Taylor's law holds also for twin primes. Taylor's law holds in both instances because the primes (and the twin primes, given the conjecture) not exceeding x are asymptotically uniformly distributed on the integers in [2, x]. Hence, asymptotically M(x) ～ x/2, V(x) ～ x²/12. Higher-order moments of the primes (twin primes) not exceeding x satisfy a generalized Taylor's law. The 11,078,937 primes and 813,371 twin primes not exceeding 2 × 10⁸ illustrate these results.