Hazard-based nonparametric survivor function estimation

Summary.  A representation is developed that expresses the bivariate survivor function as a function of the hazard function for truncated failure time variables. This leads to a class of nonparametric survivor function estimators that avoid negative mass. The transformation from hazard function to survivor function is weakly continuous and compact differentiable, so that such properties as strong consistency, weak convergence to a Gaussian process and bootstrap applicability for a hazard function estimator are inherited by the corresponding survivor function estimator. The set of point mass assignments for a survivor function estimator is readily obtained by using a simple matrix calculation on the set of hazard rate estimators. Special cases arise from a simple empirical hazard rate estimator, and from an empirical hazard rate estimator following the redistribution of singly censored observations within strips. The latter is shown to equal van der Laan's repaired nonparametric maximum likelihood estimator, for which a Greenwood-like variance estimator is given. Simulation studies are presented to compare the moderate sample performance of various nonparametric survivor function estimators.     

Language Experience Shapes the Development of the Mutual Exclusivity Bias

Halberda (2003) demonstrated that 17‐month‐old infants, but not 14‐ or 16‐month‐olds, use a strategy known as mutual exclusivity (ME) to identify the meanings of new words. When 17‐month‐olds were presented with a novel word in an intermodal preferential looking task, they preferentially fixated a novel object over an object for which they already had a name. We explored whether the development of this word‐learning strategy is driven by children’s experience of hearing only one name for each referent in their environment by comparing the behavior of infants from monolingual and bilingual homes. Monolingual infants aged 17–22 months showed clear evidence of using an ME strategy, in that they preferentially fixated the novel object when they were asked to “look at the dax.” Bilingual infants of the same age and vocabulary size failed to show a similar pattern of behavior. We suggest that children who are raised with more than one language fail to develop an ME strategy in parallel with monolingual infants because development of the bias is a consequence of the monolingual child’s everyday experiences with words.     

Donor Misreporting: Conceptualizing Social Desirability Bias in Giving Surveys

Although survey research is one of the most frequently used methods for studying charitable giving, the quality of the data is seldom stated or known. In particular, social desirability bias (SDB) has been found to distort data validity where respondents tend to over-report what is socially desirable and vice versa. We argue that this phenomenon has not been fully understood in the nonprofit context as existing social desirability scales are not appropriate to be used in giving surveys. Thus, this paper is the first to extend understanding of SDB to the nonprofit context and to explore its motivating factors. Based on a multidisciplinary literature review and qualitative interviews with various senior practitioners from the fundraising and marketing research sectors, it is suggested that SDB is a multidimensional construct yielding five dimensions, namely, impression management, self-deception, level of involvement, perceived benefits and social norms. The paper then discusses the implications for nonprofit researchers and concludes with directions for future research.     

Less assessment and more suggestions please: Factors contributing to effective supervision of counsellors at different experience levels

Abstract

Twenty-two supervisors and 60 supervisees working in community counselling services in Melbourne were asked to rate the importance of 46 supervisory behaviours to good supervision, as well as listing behaviours that contribute to and detract from good supervision. In general, supervisors saw good supervision as relating primarily to feedback to the supervisee, while supervisees were interested in learning new skills and gaining assistance with conceptualisation in supervision. The responses confirmed evidence of differing supervisee and supervisor perceptions of supervision seen in previous research of students' supervisory needs in America.

Differences in responses from supervisees in this sample to the American sample suggest some cultural differences and some differing needs attributable to different levels of experience. Responses in the current research support a developmental model of supervision; that supervisees have different needs as they gain experience. Applying a process model to behaviours believed to contribute to and detract from good supervision revealed that the bulk of responsibility for a good supervisory relationship is attributed to supervisors. Neither supervisors nor supervisees indicated a high level of supervisee qualities and skills that contribute to good supervision. This has obvious training implications.     

Conceptualizing the “Wantedness” of Women's Consensual and Nonconsensual Sexual Experiences: Implications for How Women Label Their Experiences With Rape

Sex is often conceptualized either as wanted and consensual or as unwanted and nonconsensual, reflecting an implicit model of wanting that is unidimensional and dichotomous and that conflates wanting and consenting. This study has three objectives: developing a multidimensional model for conceptualizing the wantedness of a sexual act, using this model to compare women's experiences with rape and consensual sex, and assessing whether wantedness is related to rape acknowledgment. Participants were college women who described their experiences with rape (n = 77) or consensual sexual intercourse (n = 87). Results supported a multidimensional model of sexual wanting and a wanting—consenting distinction. Compared with acknowledged rape victims, unacknowledged rape victims reported wanting the sexual intercourse more despite not having consented.     

La dimension économique de la législation protectrice de l'emploi,y compris sous ses modalités différentes: analyse sur un panel de 117 pays, 1990–2013

Les auteurs replacent l'évolution de la législation protectrice de l'emploi (y compris de durée déterminée, intérimaire et à temps partiel) dans une perspective économique en utilisant un indice de la rigueur de la réglementation établi par le Centre for Business Research de l'Université de Cambridge pour 117 pays (1970–2013). L'analyse économétrique repose sur des méthodes pour données de panel non stationnaires. Elle fait apparaître un renforcement de la protection, associé à une hausse de la part salariale dans le revenu national, une progression des taux d'activité et d'emploi et une baisse du chômage, des relations qui restent faibles cependant au regard de la tendance économique globale.     

The SERVICE Framework: A Public‐service‐dominant Approach to Sustainable Public Services

In this paper we argue that the new public management has been a flawed paradigm for public services delivery that has produced very internally efficient but externally ineffective public service organizations. Subsequently we develop the SERVICE framework for sustainable public services and public service organizations. This framework is rooted within the public‐service‐dominant business logic and emphasizes the need for a focus on external value creation rather than internal efficiency alone.     

Achieving the Optimal Vaginal State: Using Vaginal Products and Study Gels in Uganda,Zimbabwe, and South Africa

Preferences and practices related to the vaginal condition have implications for the use of vaginal HIV prevention products. The authors used qualitative methods to explore narratives relating to the vaginal state amongst women in South Africa, Uganda, and Zimbabwe who had previously participated in a biomedical HIV prevention trial. They investigated women's behaviors related to optimizing the vaginal state, experiences and perceptions of the gel's effect on the vaginal state and on penile-vaginal intercourse, women's narratives on male partner perceptions, and how preferences relating to the vaginal state may have interfered with gel use.     

The economic significance of laws relating to employment protection and different forms of employment: Analysis of a panel of 117 countries, 1990–2013

The authors use time series econometric analysis applying non‐stationary panel data methods to estimate the relationships between employment protection legislation and legal protection of different forms of employment (part‐time, fixed‐term and agency work), and economic outcomes, with a data set based on the Centre for Business Research Labour Regulation Index (CBR–LRI), covering 117 countries from 1970 to 2013. Findings suggest that these laws have become significantly more protective over time and that strengthening worker protection is associated with an increase in labour's share of national income, rising labour force participation, rising employment, and falling unemployment, although the observed magnitudes are small when set against wider economic trends.