Multi-phase sampling under cost constraints

Multi-phase sampling (M-PhS) scheme is useful when the interest is in the estimation of the population mean of an expensive variable strictly connected with other cheaper (auxiliary) variables. The MSE is an accuracy measure of an estimator. Usually it decreases as the sample size increases. In practice the sample size cannot become arbitrarily large for possible cost constraints. From a practical point of view it would be useful to know the sample sizes which guarantee the best accuracy of the estimates for fixed costs. These “optimum” sample sizes can be, in some cases, computable but not admissible. In other cases, they can be neither admissible nor computable. The main goal of this paper is to propose a solution for both these situations. It will be clear that in both situations the solution is to consider a M-PhS scheme with one or more phases less.     

ASYMPTOTIC LIKELIHOOD APPROXIMATIONS USING A PARTIAL LAPLACE APPROXIMATION

Elimination of a nuisance variable is often non‐trivial and may involve the evaluation of an intractable integral. One approach to evaluate these integrals is to use the Laplace approximation. This paper concentrates on a new approximation, called the partial Laplace approximation, that is useful when the integrand can be partitioned into two multiplicative disjoint functions. The technique is applied to the linear mixed model and shows that the approximate likelihood obtained can be partitioned to provide a conditional likelihood for the location parameters and a marginal likelihood for the scale parameters equivalent to restricted maximum likelihood (REML). Similarly, the partial Laplace approximation is applied to the t‐distribution to obtain an approximate REML for the scale parameter. A simulation study reveals that, in comparison to maximum likelihood, the scale parameter estimates of the t‐distribution obtained from the approximate REML show reduced bias.     

Effects of Risk and Time Preference and Expected Longevity on Demand for Medical Tests

Despite their conceptual importance, the effects of time preference, expected longevity, uncertainty, and risk aversion on behavior have not been analyzed empirically. We use data from the Health and Retirement Study (HRS) to assess the role of risk and time preference, expected longevity, and education on demand for three measures used for early detection of breast and cervical cancer—regular breast self-exams, mammograms, and Pap smears. We find that individuals with a higher life expectancy and lower time preference are more likely to undergo cancer screening. Less risk averse individuals tend to be more likely to undergo testing.     

1984 and beyond: Divergent Directions and Extra Depth*

It is time family therapy looked wider than the therapy session. Problems presenting also need to be viewed within a societal context. The complexity and fluid nature of issues affecting the family today needs to be recognised. To highlight this, 3 divergent areas are discussed; family structure, culture, and the nuclear threat. The myth of homogeneity is exposed and the pluralistic nature of Australian society is discussed. It is argued that family therapists have a responsibility to be aware of, and to comment on, family policy issues if the approach is to continue to develop divergent directions and extra depths.     

Coming out at work: performativity and the recognition and renegotiation of identity

This paper is about ‘coming out’ and the process of disclosure and non‐disclosure of minority sexual identity in organizations. The process of ‘coming out’ is important for the individual lesbian or gay man since it is concerned with the discursive recognition and renegotiation of their identity. The study uses storytelling and a double narrative approach, where 92 individuals were interviewed to produce 15 stories of coming out, which were used for discussion in focus groups. The research took place within 6 organizations – 2 emergency services, the police and the fire service, 2 civil service departments and 2 banks. A conceptual framework is developed to explain the process of disclosure, showing it to be a continuing process rather than a single event. The concept of performativity is used to explain how in coming out the discursive practice and the telling of sexuality performs the act of coming out, making it an illocutionary speech act, and one which is made as an active or forced choice. The performative and perlocutionary speech acts interact with available subject positions thereby impacting on the individual's subjectivity. Sexuality is an under‐researched area of diversity in work organizations, as well as being one of the most difficult to research, so the level of access afforded by this research and the framework it produces provides a significant contribution to our understanding of minority sexual identity at work.     

New deal public relations: A glimpse into FDR press secretary Stephen Early's work

Long-time confidant and press secretary to US President Franklin Delano Roosevelt, Stephen Early served throughout FDR's 12-year administration. As such, he was chief White House communicator during the implementation of the president's New Deal policies and throughout World War II. In March 1934, on the first day of his second year as secretary, Early started a diary. He added to it until the end of the decade. This study examines 131 of Early's diary entries over its 6 years to construct a glimpse of his professional and personal life as a high-level government communicator. Compilations of his most common activities are made and compared over time, and a discussion of Early's day-to-day professional work, private time, and contributions within the context of modern public relations practice are included.     

An R2criterion based on optimal predictors

The predictor that minimizes mean-squared prediction error is used to derive a goodness-of-fit measure that offers an asymptotically valid model selection criterion for a wide variety of regression models. In particular, a new goodness-of-fit criterion (cr²) is proposed for censored or otherwise limited dependent variables. The new goodness-of-fit measure is then applied to the analysis of duration.     

Ecological Concern, Attitudes, and Social Norms in Voting Behavior

Using a theoretical framework not previously tested in environmentalresearch, this study investigates the indirect relationshipbetween ecological concern and voting behavior. Results indicatethat the effects of ecological concern are mediated by attitudinal,normative, and behavioral intention variables. The results alsoprovide a partial test of the validity of Ajzen and Fishbein'sTheory of Reasoned Action. Key environmental, public policy,and communications implications are discussed.