From Detention Camps of Thailand to Freedom in the Foothills of North Carolina: One Family’s Remarkable Story

In the 1980s, a number of Hmong families relocated from Thailand detention camps to the United States. This research explores one such family. The family became the key informant in snowball sampling for a larger, ongoing study. Following a series of interviews, qualitative narrative life stories were created and themes of family preservation, survival, and perpetuation of Hmong culture began to emerge. Importantly, parental concerns about how to keep the family intact despite different levels of acculturation surfaced during the process. The purpose of this research was to examine one family’s attempts to preserve the oral history of the Hmong culture and to promote understanding across generations and community members from different cultural backgrounds. The interviews gave the family a forum to expose and discuss their secret journey along with their sacrifices and triumphs. Significantly, the sense of urgency to blend the Hmong and American cultures was profound.     

Diagnostic significance of free salivary testosterone measurement using a direct luminescence immunoassay in healthy men and in patients with disorders of androgenic status

The accurate measurement of testosterone remains a challenge. The determination of the blood testosterone concentrations in serum by conventional immunoassays is inaccurate in men and even more so in females and children. A new luminescence enzyme immunoassay (LIA) has been developed and validated. The high analytical (8.7 pmol/L) and functional (17.3 pmol/L) sensitivity allows the quantification of the very low concentration in saliva, as well as in serum, after 1/40 dilution. This study measured salivary testosterone levels and compared the results with the free levels calculated from total testosterone and sex hormone-binding globulin in eugonadal and hypogonadal men. Salivary testosterone concentrations in healthy men in morning hours were 369 pmol/L (mean), range 263–544 pmol/L, which was statistically significantly higher than that in men with androgen deficiency, 215 pmol/L (mean), range 51–249 pmol/L.

Repetitive determination of free testosterone concentrations in saliva (once a week for 5 weeks) showed high stability of results over time, with coefficient of variation 9% (range 5–23%).

In this study we showed that free salivary testosterone levels in morning samples correlated well with calculated free testosterone in blood, both in healthy men (R = 0.754, P = 0.001), and in patients with androgen deficiency (R = 0.889, P = 0.0001), though in cases with very low testosterone, salivary concentrations were systematically higher than calculated free testosterone levels in blood.     

The Role of Social Support in Coping during the Anticipatory Stage of Organizational Change: A Test of an Integrative Model

Few researchers have explored how employees use social support to cope during organizational change. The current research proposed and tested a model that integrates moderation and mediation effects in order to understand how perceived available support influences employees' use of support mobilization to deal with change‐related stress. Survey data were collected from 476 health professionals working in a large public hospital undergoing large‐scale change and downsizing. Moderated path analyses revealed evidence to suggest that perceived available support plays a moderated mediation role during coping with change. Support mobilization mediated the indirect relationship between change‐related stress and job satisfaction, at both low and high levels of perceived available colleague support. Perceived available non‐work support moderated the relationship between support mobilization and job satisfaction, and perceived available supervisor support moderated the relationship between change‐related stress and support mobilization. The direction of simple effects was not always as expected and alternative explanations for these unexpected findings are offered, along with practical implications for supervisors managing organizational change.     

Culture, Modernization, and Politics: Ethnic Differences in Union Formation in Kyrgyzstan

The unique cultural and political history of Central Asia has produced intriguing ethnic variations in union formation. We use data from a survey of 1,535 young adults conducted in 2005 in northern Kyrgyzstan to examine ethnic patterns of entry into marriage versus cohabitation. To reflect the historic-cultural and political realities of Kyrgyzstan, we subdivide ethnic Kyrgyz into two categories based on the degree of linguistic Russification??more-Russified Kyrgyz and less-Russified Kyrgyz??and compare them to each other and to respondents of European origin. The results of the multinomial discrete-time logit models show significant differences among the three groups. Thus, Europeans were most likely to enter cohabitation whereas less-Russified Kyrgyz were least likely to do so, net of other factors. The three groups were lined up in the converse order with respect to probability of entering marriage, but upon breakdown by gender this ordering was present only among women. In contrast, among men, more-Russified Kyrgyz were less likely to marry than both less-Russified Kyrgyz and Europeans. We interpret these findings in light of long-term historic-cultural and demographic distinctions as well as more recent politically induced cleavages in Kyrgyzstan.     

How Responsive Is Investment in Schooling to Changes in Redistributive Policies and in Returns?

This paper uses an unusual pay reform to test the responsiveness of investment in schooling to changes in redistribution schemes that increase the rate of return to education. We exploit an episode where different Israeli kibbutzim shifted from equal sharing to productivity‐based wages in different years and find that students in kibbutzim that reformed earlier invested more in high school education and, in the long run, also in post‐secondary schooling. We further show that the effect is mainly driven by students in kibbutzim that reformed to a larger degree. Our findings support the prediction that education is highly responsive to changes in the redistribution policy.     

Religious Affiliation and Fertility in a Sub-Saharan Context: Dynamic and Lifetime Perspectives

We use uniquely detailed data from a predominantly Christian high-fertility area in Mozambique to examine denominational differentials in fertility from two complementary perspectives—dynamic and cumulative. First, we use event-history analysis to predict yearly risks of birth from denominational affiliation. Then, we employ Poisson regression to model the association between the number of children ever born and share of reproductive life spent in particular denominations or outside organized religion. Both approaches detect a significant increase in fertility associated with membership in a particular type of African-initiated churches which is characterized by strong organizational identity, rigid hierarchy, and insular corporate culture. Membership in the Catholic Church is also associated with elevated completed fertility. We relate these results to extant theoretical perspectives on the relationship between religion and fertility by stressing the interplay between ideological, social, and organizational characteristics of different types of churches and situate our findings within the context of fertility transition and religious demographics in Mozambique and elsewhere in sub-Saharan Africa.     

The Revenue Effects of the Kennedy and Reagan Tax Cuts: Some Time Series Estimates

Univariate time series models are estimated for sample periods ending with the enactment of major tax reductions in 1964 and 1981. These models are used to forecast government revenue for the period following the tax cut, and the pattern of forecast errors is examined. Unforecast revenue is negative and large relative to its standard error following the 1981 tax cuts but is close to zero following the 1964 cuts. This disparity occurs because national output behaved differently in the two cases, suggesting that short-run movements in output are dominated by factors other than tax rate changes.     

Modified Tukey's Control Chart

Phase I of control analysis requires large amount of data to fit a distribution and estimate the corresponding parameters of the process under study. However, when only individual observations are available, and no a priori knowledge exists, the presence of outliers can bias the analysis. A relatively recent and successful approach to address this situation is Tukey's Control Chart (TCC), a charting method that applies the Box Plot technique to estimate the control limits. This procedure has proven to be effective for symmetric distributions. However, when skewness is present the average run length performance diminishes significantly. This article proposes a modified version of TCC to consider skewness with minimum assumptions on the underlying distribution of observations. Using theoretical results and Monte Carlo simulation, the modified TCC is tested over several distributions proving a better representation of skewed populations, even in cases when only a limited number of observations are available.     

Approximate reference priors for Gaussian random fields

Reference priors are theoretically attractive for the analysis of geostatistical data since they enable automatic Bayesian analysis and have desirable Bayesian and frequentist properties. But their use is hindered by computational hurdles that make their application in practice challenging. In this work, we derive a new class of default priors that approximate reference priors for the parameters of some Gaussian random fields. It is based on an approximation to the integrated likelihood of the covariance parameters derived from the spectral approximation of stationary random fields. This prior depends on the structure of the mean function and the spectral density of the model evaluated at a set of spectral points associated with an auxiliary regular grid. In addition to preserving the desirable Bayesian and frequentist properties, these approximate reference priors are more stable, and their computations are much less onerous than those of exact reference priors. Unlike exact reference priors, the marginal approximate reference prior of correlation parameter is always proper, regardless of the mean function or the smoothness of the correlation function. This property has important consequences for covariance model selection. An illustration comparing default Bayesian analyses is provided with a dataset of lead pollution in Galicia, Spain.