Theorizing and Measuring Religiosity Across Cultures.

For almost 50 years, psychologists have been theorizing about and measuring religiosity essentially the way Gordon Allport did, when he distinguished between intrinsic and extrinsic religiosity. However, there is a historical debate regarding what this scale actually measures, which items should be included, and how many factors or subscales exist. To provide more definitive answers, we estimated a series of confirmatory factor analysis models comparing four competing theories for how to score Gorsuch and McPherson's commonly used measure of intrinsic and extrinsic religiosity. We then formally investigated measurement invariance across U.S. Protestants, Irish Catholics, and Turkish Muslims and across U.S. Protestants, Catholics, and Muslims. We provide evidence that a five-item version of intrinsic religiosity is invariant across the U.S. samples and predicts less warmth toward atheists and gay men/lesbians, validating the scale. Our results suggest that a variation of Gorsuch and McPherson's measure may be appropriate for some but not all uses in cross-cultural research.

Religion and intergroup conflict: findings from the Global Group Relations Project.

How might religion shape intergroup conflict? We tested whether religious infusion-the extent to which religious rituals and discourse permeate the everyday activities of groups and their members-moderated the effects of two factors known to increase intergroup conflict: competition for limited resources and incompatibility of values held by potentially conflicting groups. We used data from the Global Group Relations Project to investigate 194 groups (e.g., ethnic, religious, national) at 97 sites around the world. When religion was infused in group life, groups were especially prejudiced against those groups that held incompatible values, and they were likely to discriminate against such groups. Moreover, whereas disadvantaged groups with low levels of religious infusion typically avoided directing aggression against their resource-rich and powerful counterparts, disadvantaged groups with high levels of religious infusion directed significant aggression against them-despite the significant tangible costs to the disadvantaged groups potentially posed by enacting such aggression. This research suggests mechanisms through which religion may increase intergroup conflict and introduces an innovative method for performing nuanced, cross-societal research.

Smoking cessation in homeless populations: who participates and who does not.

INTRODUCTION: Although homeless individuals smoke at an alarmingly high rate, few smoking cessation clinical trials have focused on this vulnerable population. Little is known about recruitment efforts and suitable eligibility criteria for tobacco control research in homeless populations. METHODS: The aim of this article is to describe the recruitment, eligibility, and enrollment of homeless smokers who participated in the Power to Quit smoking study, a randomized smoking cessation clinical trial funded by the National Institutes of Health. The study compared motivational interviewing and standard counseling while participants received an 8-week treatment of the nicotine patch. RESULTS: Working with local emergency shelters, a total of 839 adult smokers were screened for study eligibility, 580 of whom (69.1%) met eligibility criteria. Of those eligible, 430 (74.1%) returned for randomization. Those who returned for randomization were older and more likely to have a phone number compared with eligible participants not enrolled. The most common reasons for exclusion included exhaled carbon monoxide levels less than or equal to 5 parts per million (indicating nonsmoking status), use of smoking cessation aid during the past 30 days, and not meeting the study definition of homelessness. CONCLUSION: Knowledge of these factors may help researchers tailor criteria that accurately identify and include homeless smokers in future research.

Predictive immunophenotypes: disease-related profile in chronic fatigue syndrome.

BACKGROUND: There is a growing body of evidence supporting the theory that problems with immune function play an important role in chronic fatigue syndrome (CFS). METHODS: We studied 90 CFS cases and 50 healthy controls from two different areas of upstate New York to determine whether there were differences in the absolute number and pattern of natural killer (NK) and cytotoxic T-cell phenotypes between CFS cases and healthy controls in the two regions. One group was from a small town where a cluster of cases existed; the other was from a large metropolitan area where there was not a known cluster. RESULTS: The number of CD56+CD3+CD8+ and CD56+CD3+CD8- cells in cases from the two areas were both significantly elevated over that of controls from the metropolitan area (P < 0.03). The number of CD56+CD3-CD8+ and CD56+CD3-CD8- cells was significantly reduced in the two case groups compared to that of controls from the metropolitan area (P = 0.04). However, controls who were from the same town as the cluster cases had numbers of CD56+CD3+CD8+, CD56+CD3+CD8-, and CD56+CD3-CD8- cells that were more like that of cases than controls. Only the number of CD56+CD3-CD8+ cells (an NK cell subset) was significantly different in cases versus controls from the cluster area (P = 0.022). CONCLUSIONS: These data suggest that differences in controls from cluster and noncluster areas may be responsible for some of the inconsistencies in results from other studies. Furthermore, they suggest the possibility that NK cell function may play an important role in preventing the development of CFS in individuals who live in a community where a cluster of cases have been identified.