LMX differentiation: A multilevel review and examination of its antecedents and outcomes

We examine antecedents and outcomes of leader–member exchange (LMX) differentiation, or the variability in LMX patterns within work groups. Individual-level characteristics and behaviors of leaders and followers, group context, and organizational context variables are presented as antecedents. We review and offer theoretical extensions to research examining the outcomes of LMX differentiation at the individual, group, and organizational levels. Our aim is to contribute to a meso-model of leadership and stimulate research that attends to the core element of the LMX model–LMX differentiation.     

The New Landform's Here! The New Landform's Here! We're Somebody Now!! The Role of Discursive Practices on Place Identity*

Abstract On the border of western Iowa, a new landform—the “Loess Hills,” is being created. While scientific discourse surrounding the landform has been on going for a century, “discovery” of the landform by local residents is a recent occurrence, stimulated by socioeconomic changes resulting from the “farm crisis.” As this case study shows, the initial scientific discourse and claims, as presented in a series of publications, established the uniqueness and rarity of the hills in scientific terms. Through a complexity of discursive practices, this internalized scientific community discussion was brought into broader public conversations. Aspects of the discursive practices have been taken on by residents at the local level and appropriation of the “Loess Hills” name and facts attributed to the landform has resulted in reshaping place identity among rural residents and altering the traditional power position within the region, with “hill people” now becoming “Loess Hills People.”     

Fund-raising by hospital foundations

1986–87 data for eighty hospitals in Ontario and their foundations are used to assess the influence of various socioeconomic characteristics of the constituent populations and selected characteristics of the beneficiary hospitals on foundation revenue. Six factors appear to increase hospital foundation revenue: a higher percentage of the population that is elderly, a lower percentage of the population born outside Canada, a higher percentage of the population that has not moved within the past year, a larger hospital market share, teaching-status for the beneficiary hospital, and a higher level of foundation expenses.     

Intimate partner violence among married male U.S. Army soldiers: ethnicity as a factor in self-reported perpetration and victimization

Correlates of self-reported intimate partner violence (IPV) were examined among 488 married male U.S. Army soldiers. Study results were examined within the framework of Johnson's (1995) typology, which proposes that there are two main types of IPV, common couple violence and intimate terrorism. We predicted that poor marital adjustment would be associated with minor violence, hypothesized to be indicative of common couple violence. We also predicted that psychological and behavioral characteristics associated with perpetrators of IPV would be more strongly correlated with severe inflicted aggression--a pattern hypothesized to be indicative of intimate terrorism. The results, based on a multivariate analysis of covariance, generally supported our hypotheses. Furthermore, the higher levels of IPV reported by Black respondents in this study were associated with the pattern hypothesized to be characteristic of common couple violence.     

Histories of poverty and self-rated health trajectories

This paper investigates the dynamic relationship between poverty histories and self-rated health trajectories. We are interested in patterns of change in individuals' health over time and the ways in which such patterns are structured by continuity and change in poverty experiences. Data, collected for adults aged 25 and older in 1984 (N = 7,258), are from the 1968-1996 annual waves of Panel Study of Income Dynamics (PSID). Individual growth curves allow us to investigate health trajectories as continuous processes, as well as individual and group heterogeneity in these trajectories. We find that, on average, health deteriorates slowly over time, but there is significant variation in health in 1984 and the rate at which health declines. Histories of poverty partly accounted for the sources of individual differences in self-rated health in 1984, but they were not related to health change over time. Although increasing incomes were better for self-rated health than falling incomes, current economic circumstances did not erase the health effects of earlier poverty experiences.     

A Comparative Analysis of Male and Female Delinquency*

The historically dominant and generally accepted view is that males are much more likely than females to commit delinquent acts, and that when females deviate their misconduct is significantly less serious than that of males. This paper examines the recent contention that the delinquent behavior of males and females is more similar than assumed. Self-report questionnaires were administered in 1977 to a sample of 822 male and female adolescents selected from two urban high schools in a large midwestern state. Following Hindelang (1971), we concentrate on the types of delinquent acts most frequently reported, as well as the extent of involvement in these acts. While males tend to commit most offenses more frequently than females, the pattern of delinquency is virtually identical for the two groups. This uniformity holds for race-sex subgroups, although there are more similarities in delinquency within racial groups than within sex groups.     

Sources,sinks, and fluxes of nutrients (N + P) in a small highly modified urban estuary in southern California

Our objective was to begin to investigate sources, sinks, and flux rates of nitrogen (N) and phosphorus (P) in Famosa Slough, a small (12 ha) highly modified urban estuary in San Diego, California, U.S.A. The hydrology of Famosa Slough has been modified by culverts that dampen tidal influence and seasonal runoff from two urban watersheds, each of which has been implicated as a nutrient source that generates nuisance algal blooms. In 1995 and 1996, the ranges of nutrients measured in the water column were extremely wide; upper values exceeded those in other estuaries identified as eutrophic. Average dissolved inorganic nitrogen ranged from 2 to 250 M, while dissolved inorganic phosphorus ranged from <1 to 15 M. Nutrient content of the water changed rapidly both spatially and temporally depending on the tides and rainfall. While tidal water dominated this system, especially in the dry season, our results indicate that Famosa Slough's small watershed, not the larger watershed of the San Diego River, was the major source of nutrients during rainfall. Sediment nutrients were also high (3 mg N g dry wt^–1 and 0.600 mg P g dry wt^–1). Short-term flux studies suggest that the large accumulations of opportunistic green macroalgae commonly found in this estuary, and possibly the sediments, may act as a large and rapid sink for nutrients during times of high nutrient supply. We suggest that small, shallow estuaries in urban settings may have more complex and rapid nutrient dynamics than those found in larger systems.     

Partitioning the adoption process to better predict permanency

Under federal outcome standards established by the Adoption and Safe Families Act of 1997, discharges to adoption are expected to occur within 24 months of the most recent removal from home for at least 32% of cases. In the research recounted here, adoption is treated as a process composed of two discrete steps: adoptive placement and adoption finalization. It was hypothesized that the predictors of completion may differ for each step, offering direction for practice and policy. Predictors included child characteristics, maltreatment history, placement history, system variables, and service delivery variables. Children's adoption event history was viewed through five annual entry cohorts, including all children with adoption case plans, rather than the exit cohorts of the federal measure, which includes only adopted children. Over this five-year period, the length of time from removal to adoption finalization decreased significantly, primarily as a result of decreased time from adoption placement to finalization. Child and family characteristics and abuse/neglect history were found to be much more predictive in the analysis of timely adoption placement than of time from placement to finalization. These and other significant predictors suggest strategies for improving timely adoption outcomes.     

Maternal childhood parental abuse history and current intimate partner violence: data from the Pacific Islands Families Study

Pacific peoples are a rapidly growing but socially disadvantaged segment of New Zealand society. Within this context, individuals may be particularly vulnerable to the experience of intimate partner violence (IPV). The aim of the study was to establish the association between the experience of maternal and/or paternal emotional or physical abuse and current severe physical partner violence perpetration or victimization among a cohort of Pacific women. Paternal physical abuse was the only statistically significant risk factor from childhood parenting history that was independently associated with severe physical perpetration and victimization within the mother's current intimate partner relationship (RR 2.6). These findings highlight the deleterious effect of paternal physical violence on subsequent IPV and contribute to the development of empirically based and considered ways to approach these complex phenomena.     

Tuberculosis screening on a health science campus: use of QuantiFERON-TB Gold Test for students and employees

Detecting and managing Mycobacterium tuberculosis (TB) infection in a health-science center population is a clinical dilemma. Tuberculin skin tests are still the preferred method for detecting present or past infection of TB. The authors discuss the performance of whole blood interferon gamma release assay test commercially known as QuantiFERON-TB Gold Test (QFT-G) as an additional tool for a TB surveillance program for the students and employees at an academic medical center. QFT-G was successfully implemented as a confirmatory test for screening of TB infection.