TESTING THE SIGNIFICANCE OF GENOTYPE-ENVIRONMENT INTERACTION

The AMMI (additive main effects-multiplicative interaction) model is often used to investigate interactions in two-way tables, in particular for genotype-environment interactions. Both Gollob (1968) and Mandel (1969, 1971) proposed methods for testing the significance of such interactions. These methods are compared using simulated data. Our results support Mandel's conclusions, but his method is conservative and we recommend a test proposed by Johnson & Graybill (1972).     

Predictors of out-of-pocket medical expenditures in low-income households

From a sample of low-income households, out-of-pocket medical expenses are found to average about $25 per month. For each household, these expenses vary with annual income, type of insurance for medical care, priority of medical expenses, ethnicity, and number of ill family members. Expenses are reported for households with different socioeconomic characteristics and composition. Multiparticipation in insurance programs is shown. Fourteen percent of the survey participants say they have no insurance, public or private. Thirty-three percent participate in Medicaid.Flora L. Williams is an Associate Professor in Consumer Sciences and Retailing at Purdue University, West Lafayette, IN 47907. She received her Ph.D. from Purdue University and includes family economic well-being, and financial problems and expenditures among her research interests.Amy Hagler received her M.S. from Purdue University in Consumer Sciences and Retailing.Mary Pritchard is an Associate Professor in the Department of Human and Family Resources at Northern Illinois University, DeKalb, IL 60115-2854. Her Ph.D. was earned at Purdue and her areas of research focus on family economic well-being and economic socialization of adolescents.Marshall A. Martin is a Professor of Agricultural Economics at Purdue University. His research addresses agriculture and food policy, and economic assessment of emerging agricultural technology.William C. Bailey is an Assistant Professor of Marketing at the University of Indianapolis, 1400 E. Hanna Avenue, Indianapolis, IN, 46227-3697. He received his Ph.D. from Texas Tech University and focuses his research on economic psychology and health care cost.     

A mexican American woman encounters sociology: An autobiographical perspective

I attempt to show how my ideas about bureaucracy and Mexican American culture are a product of my life history and how I worked out key features of these ideas in teaching sociology at a small university. This was made possible because strategic sponsors helped me as an “outsider” to become a kind of “insider” within that social milieu. Her fields of interest are bureaucracy, family, social psychology and race and ethnic relations. She is currently writing a monograph on Mexican American family life.     

Evaluation in the community mental health centers program: A bold new reproach?

The Federal Community Mental Health Centers Program (CMHC)-from 1963 to 1981-was heralded as a revolution in mental health care. Championed by many, and severely criticized by others, the actual impact of the program on the nation's mental health remains unclear. The authorization to evaluate the CMHC Program came originally from congressional legislation (PL 90-174), and later from the policies and regulations of NIMH under a series of Federal laws, notably PL 94-63. From 1976-1980, two dominant evaluation strategies were prevalent: funds expended by NIMH each year for studies of CMHC services or program-wide evaluations, and a much larger expenditure by CMHCs to conduct their own, independent evaluations following federal guidelines. As the Center's Program was turned over to the states in the form of block grants (PL 97-35), a group of professionals involved with setting and carrying out federal CMHC evaluation policy of both varieties met in public forum to debate the impact of these two evaluation approaches. While some participants cited gains in evaluation technology and impact upon local management of CMHCs, others found the lack of a coordinated and systematic approach to evaluating the CMHC Program to have been an opportunity missed. The impact of CMHC evaluation efforts are also discussed in terms of their major contribution to the field of evaluation research as a whole.     

A simple derivation of the distribution of the multiple correlation coefficient

It is shown that the non-null distribution of the multiple correlation coefficient may be derived rather easily if the correlated normal variables are defined in a convenient vay. The invariance of the correlation distribution to linear transformations of the variables makes the results generally applicable. The distribution is derived as the well-known mixture of null distributions, and some generalizations when the variables are not normally distributed are indicated.     

Punitive welfare reform and claimant mental health: The impact of benefit sanctions on anxiety and depression

Internationally, policymakers assume that sanctioning claimants of unemployment benefits will engender both improved employment outcomes and wider positive effects. A growing evidence‐base challenges these expectations, though additional insight is needed from large‐scale longitudinal research. This article contributes by conducting a quantitative investigation into the mental health impacts of benefit sanctions. To do so, it focuses on a recent period in UK sanctions policy in which rates of sanctions varied markedly and their length was substantially increased. Using quarterly panel data for local authorities in England (Q3 2010–Q4 2014) and fixed effects models that control for important confounders, the analysis provides robust evidence that Jobseeker's Allowance (JSA) sanctions lead to increases in self‐reported anxiety and depression. Evidence of this adverse impact is particularly clear following the increase in the length of sanctions in October 2012. The results have important implications for contemporary social security policy, which is underpinned by a similarly punitive sanctions regime. Whilst additional individual‐level research is needed to fully consider the causal relationships in operation, the findings support a precautionary approach that should seek to minimise the harm associated with sanctions. This implies taking steps to reduce both the severity and frequency of applied sanctions.     

Determinants of Volunteering Within a Social Housing Community

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - In general, research demonstrates that deprivation, education, health, and well-being are determinants of volunteering,...