The Job Demand-Control (-Support) Model and psychological well-being: a review of 20 years of empirical research

The Job Demand-Control (JDC) model (Karasek, 1979) and the Job Demand-Control-Support (JDCS) model (Johnson, and Hall, 1988) have dominated research on occupational stress in the last 20 years. This detailed narrative review focuses on the JDC(S) model in relation to psychological well-being. It covers research from 63 samples, published in the period 1979-1997. In the review a distinction is drawn between two different hypotheses prevailing in research on the models. According to the strain hypothesis of the JDC model, employees working in a high-strain job (high demands-low control) experience the lowest well-being. The buffer hypothesis states that control can moderate the negative effects of high demands on well-being. Translating these hypotheses to the expanded JDCS model, the iso-strain hypothesis predicts the most negative outcomes among workers in an iso-strain job (high demands-low control-low social support/isolation), whereas the buffer hypothesis states that social support can moderate the negative impact of high strain on well-being. Although the literature gives considerable support for the strain and iso-strain hypotheses, support for the moderating influence of job control and social support is less consistent. The conceptualization of demands and control is a key factor in discriminating supportive from nonsupportive studies. Only aspects of job control that correspond to the specific demands of a given job moderate the impact of high demands on well-being. Furthermore, certain subpopulations appear to be more vulnerable to high (iso)strain, whereas others benefit more from high control. On the basis of the results of this review, suggestions for future research and theoretical development are formulated.     

Stability analysis using mixed models: A critique of tolerance interval methods and a probabilistic solution

Recently, tolerance interval approaches to the calculation of a shelf life of a drug product have been proposed in the literature. These address the belief that shelf life should be related to control of a certain proportion of batches being out of specification. We question the appropriateness of the tolerance interval approach. Our concerns relate to the computational challenges and practical interpretations of the method. We provide an alternative Bayesian approach, which directly controls the desired proportion of batches falling out of specification assuming a controlled manufacturing process. The approach has an intuitive interpretation and posterior distributions are straightforward to compute. If prior information on the fixed and random parameters is available, a Bayesian approach can provide additional benefits both to the company and the consumer. It also avoids many of the computational challenges with the tolerance interval methodology.     

Energy Drinks,Weight Loss,and Disordered Eating Behaviors

Abstract

Objective: The present study examined energy drink consumption and relations with weight loss attempts and behaviors, body image, and eating disorders. Participants/Methods: This is a secondary analysis using data from 856 undergraduate students who completed the American College Health Association–National College Health Assessment II confidentially online during February 2012. Results: This study revealed that the majority reported lifetime consumption of energy drinks (68.4%) and a substantial minority (30.2%) reported past-30-day consumption. Chi-square and t test results suggest that consumption is associated with concerns about personal appearance, weight loss attempts, and disordered eating behaviors (eg, vomiting). Hierarchical logistic regressions revealed that after controlling for demographics, the relations between energy drink consumption and the act of trying to lose weight, the use of diet pills, and the use of vomiting/laxatives remained significant. Conclusions: The current findings suggest that energy drink consumption is associated with weight loss attempts, poor body image, and unhealthy weight loss behaviors. Future research should examine the prevalence of energy drink consumption for the purpose of weight loss.     

Responding to Self‐harm: A documentary Analysis of Agency Policy and Procedure

This paper reports on the findings of a documentary analysis of policies and procedures relating to self‐harm from a range of organisations working with young people in the UK. It identifies the extent to which policies and/or procedures relating to self‐harm are available for service providers and offers a wider understanding of the concepts of self‐harm and approaches to helping as incorporated into service guidance and delivery. It highlights the prevalence of self‐harming behaviours in a climate of stigma and the need to define appropriate and supportive agency responses from a trained staff that is both sensitive and individualised.     

The Postadoption Needs of Adoptive Parents of Children With Disabilities

Adoptions of children with disabilities are considered special needs, due to the higher level of support needed pre- and postadoption by families and children for adoptions to succeed. Despite this fact, very few studies examine the specific postadoption experiences of families with children with disabilities. Using secondary analysis of a national survey of adoptive parents, as well as interviews and a focus group with adoptive parents in one state, this study examines families’ with adopted children with disabilities challenges and unmet needs after adoption, as well as the postadoption needs and experiences of adoptive families with children with developmental and intellectual disabilities and adoptive families of children with emotional, behavioral, and mental health disabilities. Findings indicate that families with children with disabilities do report higher rates of challenges and barriers to service access, and that this is particularly true in families with adopted children with emotional, behavioral, and mental health disabilities. Implications for research and practice are discussed.     

Factors Influencing the Degree and Pattern of Parental Involvement in Play Therapy for Sexually Abused Children

Although much has been written about the role of therapists in children's recovery from child sexual abuse, relatively little attention has been paid to the role of nonoffending parents. This study investigated the work of a team of therapists who sometimes included such parents in therapy sessions with children. The study sought to understand what factors were influencing the degree and pattern of parental involvement and to understand what effect these patterns of parental involvement were having on the process and outcomes of therapy. The study successfully identified a range of factors influencing the patterns of parental involvement, but more research will be needed to understand the effect on outcomes.     

Attitudes Toward Advanced Licensing for Macro Social Work Practice

ABSTRACT

Trends in clinical licensing and a renewed energy to strengthen macro practice are raising questions about the appropriateness of licensure for macro social work practice. This article presents findings from an online survey of macro social work educators and macro social work practitioners exploring their attitudes toward an advanced-level macro social work license. Faculty and practitioner responders agreed that there is a role for advanced-licensing of macro social work practice; however, the lack of a collectively strong response reflects a current state of ambivalence toward advanced-level licensing for macro practice. Implications from these findings on contemporary social work are discussed.     

Differences and Similarities in Men's and Women's Sexual Self-Schemas

In the last 10 years, researchers have developed separate rating scales for men and women that purport to measure a person's thoughts about their sexual self or sexual self-schema. While these scales are promising, there are some problems intrinsic to these measures. This study addresses these concerns and tests a combined measure for use among both men and women, while retaining internal consistency and a factor structure similar to the women's scale. Having both men and women complete the same scale permitted a comparison of how men and women think about their sexual selves. In this study, gender differences netted a small effect, with men scoring lower on both the loving/warmth and reserved/conservative factors compared to women. Results are discussed in terms of future research with this new scale and the meaning of gender differences along these dimensions.