Services for troubled adolescents: exploring user variation

This paper outlines some of the main findings from an exploratory study of a sample of 257 adolescents living in children's homes, foster homes and residential special schools ‘for pupils with emotional and behavioural difficulties’ (‘EBD’). It focuses on the characteristics of service users, particularly contrasting the looked after and EBD groups. Though there are some similarities, there are also important differences between the populations in terms of age, gender, ethnicity, reasons for separation, legal status, family background and education. An attempt was made systematically to compare groups by creating a subsample of ‘difficult’ adolescents, based on involvement in anti‐social behaviour. Unexpectedly, this revealed that half of the teenagers were not ‘difficult’. Factors associated with being identified as ‘difficult’ were explored.     

The effects of physical activity and sedentary behavior on cognitive health in older adults

Physical activity has been shown to be positively associated with cognitive health, but the mechanisms underlying the benefits of physical activity on cognitive health are unclear. The present study simultaneously examined two hypotheses using structural equation modeling (SEM). The depression-reduction hypothesis states that depression suppresses cognitive ability and that physical activity alleviates dysphoric mood and thereby improves cognitive ability. The social-stimulation hypothesis posits that social contact, which is often facilitated by socially laden physical activities, improves cognitive functioning by stimulating the nervous system. Sedentary behavior in the absence of physical activity is expected to exert an inverse relationship on cognitive health through each of these hypotheses. Community-dwelling elders (N = 158) were administered a variety of measures of cognition, depression, social support, and physical activity. SEM techniques provided partial support for the social-stimulation hypothesis and depression-reduction hypothesis. Implications for treating depression and improving cognitive functioning are discussed.     

Predictors of falling in older Maryland drivers: a structural-equation model

Falls can impair health and reduce quality of life among older adults. Although many factors are related to falling, few analyses examine causal models of this behavior. In this study, factors associated with falling were explored simultaneously using structural-equation modeling. A variety of cognitive, physical-performance, and health measures were administered to 694 older adult drivers from the state of Maryland. The observed and latent variables of age, cognitive ability, physical functioning, health, and falling behavior were used to create a causal model. The model revealed that being older was associated with declines in cognition, and such cognitive declines predicted increased falling. Similarly, poorer health was related to poorer physical functioning, which, in turn, also predicted increased falling. This model indicates that in addition to existing fall-prevention interventions aimed at improving physical functioning, interventions to improve cognition and health might also be effective. It is speculated that fear of falling, which often results in reduced mobility among older adults, might account for the lack of a direct relationship between age and falling. This hypothesis should be examined in further research.     

Frequency of Selecting Noise Variables in Subset Regression Analysis: A Simulation Study

This article presents the results of a simulation study of variable selection in a multiple regression context that evaluates the frequency of selecting noise variables and the bias of the adjusted R ² of the selected variables when some of the candidate variables are authentic. It is demonstrated that for most samples a large percentage of the selected variables is noise, particularly when the number of candidate variables is large relative to the number of observations. The adjusted R ² of the selected variables is highly inflated.     

Work Trajectories of Female and Male Immigrants in Spain

This article aims to examine in depth the work trajectories of individuals over time, in order to provide a wider perspective of the employment history of immigrants compared to native people, by gender and for more than one decade (2005–2017) in Spain. We use microdata (cohort and multivariate analysis) from the Labour Force Survey and carry out a comparison for three groups: the Spanish born in Spain, the Spanish born abroad, and the non-Spanish born abroad. The results confirm that the non-Spanish born-abroad group is characterized by the existence of segmented assimilation. All foreigners suffered a loss in their work trajectories, since their employment rate in 2017 has as yet neither reached the level of the last years of the previous economic expansion nor the level of the previous cohorts at the same age.     

Conceptualising social capital in relation to the well-being of children and young people: a critical review

This exploratory article forms the background for an empirical study for the Health Education Authority on children, young people, health, well-being and social capital. In terms of morbidity, children tend not to exhibit clear health problems, but obviously engage in activities that have important implications for their health and well-being (West & Sweeting, 1996), and these activities may be influenced by, as well as impact upon, children's social capital. Social capital is an elusive concept and has been defined in various ways, and refers to sociability, social networks and social support, trust, reciprocity, and community and civic engagement. The paper contrasts three interpretations of the concept, by Coleman (1988, 1990), Putnam (1993, 1995) and Bourdieu (1986). It concludes that the concept is currently poorly specified as it relates to children, and that the use of the term is inherently problematic, and needs to be carefully critiqued and empirically grounded before it can usefully be applied in social policy formulations. One possible way forward might be to conceptualise social capital not so much as a measurable ‘thing’, rather as a set of processes and practices that are integral to the acquisition of other forms of ‘capital’ such as human capital and cultural capital (ie qualifications, skills, group memberships, etc).     

Secular declines in the association between obesity and mortality in the United States

Recent research suggests that rising obesity will restrain future gains in US life expectancy and that obesity is an important contributor to the current shortfall in us longevity compared to other high-income countries. Estimates of the contribution of obesity to current and future national-level mortality patterns are sensitive to estimates of the magnitude of the association between obesity and mortality at the individual level. We assessed secular trends in the obesity/mortality association among cohorts of middle-aged adults between 1948 and 2006 using three long-running US data sources: the Framingham Heart Study, the National Health and Nutrition Examination Survey, and the National Health Interview Survey. We find substantial declines over time in the magnitude of the association between obesity and overall mortality and, in certain instances, cardiovascular-specific mortality. We conclude that estimates of the contribution of obesity to current national-level mortality patterns should take into account recent reductions in the magnitude of the obesity and mortality association.