A note on glejser's test for heteroscedasticity

Glejser published a test on the residuals of a regression model where the parameters are estimated by OLS that purports to detect “mixed” heteroscedasticity. This note addresses the problem of detecting this type heteroscedasticity from,both a theoretical and pragmatic point of view. We conclude that “mixed” heteroscedasticity cannot be separated from non zero expected errors and thus cannot be detected using Glejser s technique.     

Reflexivity and ethical research practice while interviewing on sexual topics

Reflexivity is a multimodal research feature that relies on the researcher’s subjectivity and self-awareness. This paper discusses uses of reflexivity when carrying out qualitative in-depth interviews on sexual topics. Through extracts of a challenging interview, where the challenge comes in the form of sexualised provocation from one man to another, this paper considers the benefits of using reflexivity to address emerging complexities in the interview process. The discussion focuses on ethical research practice through the lens of three forms of reflexivity: (1) reviewing the values that underpin a research project, with emphasis on the tension between rationality and intuition; (2) emotional self-awareness and self-care; and (3) recognition of the power dynamics in the researcher-participant relationship. Reflexivity promotes an intuition-informed decision-making process as a means to achieve ethical practice and conduct interviews with sensitivity and proficiency.     

Newsletters for Networks

Abstract

In the previous installment of this column, Donnice Cochenour wrote about Project Muse, Johns Hopkins University Press's project to provide electronic access to its journals. This column will explore OCLC's collaboration with publishers who are making traditional print publications available electronically. Serials Review interviewed Andrea Keyhani, Manager of Electronic Publishing at OCLC, about traditional print publishers' interests in electronic distribution of journals, OCLC's solution to publishers' migration to electronic distribution, enhancements to their Guidon software, and libraries' costs and archive concerns.     

Central American regional integration in science,technology and innovation: a new challenge

In recent years in international cooperation policies and public policies of the Central American (CA) region multilateral mechanisms were generated to form interinstitutional networks that drive science, technology, and innovation (STI) as the engine for regional economic growth. In the agreements social, political, and economic disparity were taken into account in order to stimulate the articulation between actors and potentialize local strengths to generate critical mass on the level of knowledge and build a research core base. The aim of this article is to identify institutional and productive capacities acquired in the countries of the region (CA) that encourage interaction on a national level and create favorable conditions to generate regional agreements to build regional interaction on STI. Results show deficiencies in the linking between public and private agents derived from the limited funds destined to I+D, the insufficient channels of information and the lack of interest of the investigations to respond to priority problems of the region, which weaken links with the productive sector. From there, arise the need to build a joint and collaborative work agenda to consolidated the institutional environment and favors the capacities to absorb knowledge.     

Observed Emotions as Predictors of Quality of Kindergartners’ Social Relationships

This study evaluated whether positive and anger emotional frequency (the proportion of instances an emotion was observed) and intensity (the strength of an emotion when it was observed) uniquely predicted social relationships among kindergarteners (N = 301). Emotions were observed as naturally occurring at school in the fall term and multiple reporters (peers and teachers) provided information on quality of relationships with children in the spring term. In structural equation models, positive emotion frequency, but not positive emotion intensity, was positively related to peer acceptance and negatively related to peer rejection. In contrast, the frequency of anger provided unique positive prediction of teacher–student conflict and negative prediction of peer acceptance. Furthermore, anger intensity negatively predicted teacher–student closeness and positively predicted teacher–student conflict. Implications for promoting social relationships in school are discussed.     

Cut-points to prevent low back injury due to force exertion at work

Force exertion is related to low back injuries (LBI). This paper critically reviews the literature concerning cut-points for back force exertion, presents available guidelines in a concise manner, and identifies areas that need further research. The studies reviewed were grouped according to the criteria used to set the cut-point values. Most often cut-points differ than concur. The approach considering physiological, psychophysical, epidemiological, and biomechanical aspects of back force exertion meets the most known criteria and presents the lowest common denominator of instantaneous load for lifting tasks. Further experimental and epidemiological studies in peak load and cumulative exposure are necessary. Compound indices should also be developed for pushing, pulling, and carrying. Future indices should consider electromyographically determined fatigue, differential viscoelastic properties of tissues, aging, and the cross sectional area of back muscles. We hope that this paper contributes to a more systematic appraisal of back force exertion at work.     

Developmental Differences in Infants' Attention to Social and Nonsocial Threats

Research has demonstrated that humans detect threatening stimuli more rapidly than nonthreatening stimuli. Although the literature presumes that biases for threat should be normative, present early in development, evident across multiple forms of threat, and stable across individuals, developmental work in this area is limited. Here, we examine the developmental differences in infants' (4‐ to 24‐month‐olds) attention to social (angry faces) and nonsocial (snakes) threats using a new age‐appropriate dot‐probe task. In Experiment 1, infants' first fixations were more often to snakes than to frogs, and they were faster to fixate probes that appeared in place of snakes vs. frogs. There were no significant age differences, suggesting that a perceptual bias for snakes is present early in life and stable across infancy. In Experiment 2, infants fixated probes more quickly after viewing any trials that contained an angry face compared to trials that contained a happy face. Further, there were age‐related changes in infants' responses to face stimuli, with a general increase in looking time to faces before the probe and an increase in latency to fixate the probe after seeing angry faces. Together, this work suggests that different developmental mechanisms may be responsible for attentional biases for social vs. nonsocial threats.     

Social workers' attitudes towards female victims of domestic violence: A study in one English local authority

This paper aims to explore childcare social workers' attitudes towards female victims of domestic violence in England. The study discusses the concept of “mothering” and the processes through which mothers are potentially denigrated rather than empowered. Semi‐structured interviews were conducted with social workers in a single child protection agency to investigate their perceptions of domestic violence, its gendered nature, and the implications for their practice. Participants' responses were coded using thematic analysis. The results demonstrated social workers' cognisance of the challenges domestic violence poses for abused mothers in terms of the ability to safely parent their children. Although the study is not without its limitations, it nevertheless indicates the need for a more holistic approach to safeguarding children within domestic violence settings. Moreover, it underscores the necessity for improving awareness about the prevalence and importance of domestic violence as a child safeguarding concern within social work training. Indeed, improved training would help to develop social workers' knowledge and understanding of service provisions and partner agencies, thus potentially improving practice in this critically important area.     

Accompaniment in a Mexican immigrant community: Conceptualization and identification of biopsychosocial outcomes

Taller de Jose (TDJ) offers accompaniment in a Mexican neighborhood in Chicago, helping service participants navigate health, judicial, and social service systems. Using a community-based participatory approach, the current study conceptualizes the accompaniment service and identifies psychosocial outcomes. Focus groups with service participants and staff were conducted, using a grounded theory approach. The data provides support for a conceptual model of accompaniment based on interdisciplinary knowledge in ministry, social work, and public health; and a consideration of social context, values, and outcomes such as increased social support, knowledge of community resources, and improved self-efficacy.