Detection of interactions in experiments on large numbers of factors

One of the main advantages of factorial experiments is the information that they can offer on interactions. When there are many factors to be studied, some or all of this information is often sacrificed to keep the size of an experiment economically feasible. Two strategies for group screening are presented for a large number of factors, over two stages of experimentation, with particular emphasis on the detection of interactions. One approach estimates only main effects at the first stage (classical group screening), whereas the other new method (interaction group screening) estimates both main effects and key two-factor interactions at the first stage. Three criteria are used to guide the choice of screening technique, and also the size of the groups of factors for study in the first-stage experiment. The criteria seek to minimize the expected total number of observations in the experiment, the probability that the size of the experiment exceeds a prespecified target and the proportion of active individual factorial effects which are not detected. To implement these criteria, results are derived on the relationship between the grouped and individual factorial effects, and the probability distributions of the numbers of grouped factors whose main effects or interactions are declared active at the first stage. Examples are used to illustrate the methodology, and some issues and open questions for the practical implementation of the results are discussed.     

The concurrent and longitudinal impact of sleep on mind wandering in early adolescents

Mind wandering refers to task-unrelated thoughts that can interfere with ongoing tasks and could be sleep-driven across childhood. The present study investigated the mechanisms of the association between early adolescents' sleep and mind wandering with emotional symptoms and executive function as potential mediators. A total of 257 early adolescents (baseline aged 9–13 years old; 131 boys) completed the questionnaires consisting of the Pittsburgh Sleep Quality Index, mind wandering, depression and anxiety symptoms, and executive function. Cross-sectional and longitudinal data revealed a sequential mediation pathway of emotional symptoms and executive function in the association between sleep and mind wandering. The mediating effect of emotional symptoms in the link between sleep quality and mind wandering was significant among boys but not girls.     

Family and work-related risk factors in children's social–emotional well-being and parent–educator cooperation in flexibly scheduled early childhood education and care

Non-standard work schedules (NSWS) have become typical, but their associations with childcare arrangements and children's well-being are unknown. This study explores how risk factors are associated with the social–emotional well-being of girls and boys using flexibly scheduled early childhood education and care. Furthermore, the study investigates whether well-functioning cooperation between parents and educators buffers the negative effects of the risk factors. This study, which is a part of a larger survey carried out in three European countries, reports Finnish parents' (N = 146) perspectives. The results showed that high parental stress was associated with low child well-being. Strong parent–educator cooperation positively impacted both boys' and girls' social–emotional well-being. The risk factors of reconciling work and family life had negative associations with children's well-being and the fulfilment of their basic needs. The results illustrate the complex interrelations between children's well-being, risk factors relating to NSWS and the buffering effect of protective factors.     

Can a Self-Regulation Skills and Cultural Arts Program Promote Positive Outcomes in Mental Health Symptoms and Academic Achievement for At-Risk Youth?

ABSTRACT

Self-regulation skills programs focusing on emotional regulation and executive functioning and arts programs have separately demonstrated reductions in internalizing and externalizing disorders and academic difficulties and have shown improvement in self-regulation skills. This study sought to evaluate participants in Prodigy (a program synthesizing arts and self-regulation skills) regarding changes in mental health symptoms and academic performance. A quasi-experimental pretest–posttest was conducted with 108 at-risk adolescents and their parents. Significant reductions in internalizing and externalizing mental health symptoms and increases in academic self-efficacy with positive trends in improved academic achievement were noted. Future research regarding the potential of these two modalities is discussed.     

Community-Based Long Term Care

Through the Living at Home Program (LAHP) 20 communities across the United States have developed cooperative networks involving multiple health and social services providers. The LAHP networks have sought to increase access to care, reduce duplication of services, and identify and fill service gaps. The LAHP national evaluation is examining the inter-organizational linkages that have been implemented by the networks and the characteristics of 1500 clients enrolled for care. Preliminary findings at the midpoint of the evaluation indicate that the networks have moved from a reliance on informal communication and coordination mechanisms at baseline to the use of more formal structural mechanisms over time. Despite the lack of formal targeting criteria, the networks have enrolled a quite frail elderly population. Future analyses will examine variability across the networks in client targeting and service utilization, In order to shed light on the need for utilization review of community based long term care.     

Understanding Normative Growth and Development in Aging

No abstract available for this article.     

The Early Modern Economy of the Yangzi Delta in a New Perspective

China has experienced spectacular economic growth during the past three decades and seen some parts of the country, in particular the Yangzi Delta, swiftly converging with the developed countries in the level of economic development. This unprecedented growth has been seen as the greatest economic miracle in world history. This miracle is based on the economic performance of the Yangzi Delta in the long run of centuries. It is impossible to achieve a better understanding of the economic miracle of the delta without a better understanding of the basis created by the delta’s economy during its long historical development, in particular in the centuries before the modern West arrived in the mid- nineteenth century. To achieve this objective, we must break free of the West-centric straightjacket and study China’s early modern economy from a new perspective, which will be crucial to improve our knowledge of Chinese economic performance prior to the arrival of the West.     

Why do some pregnant women not fully disclose at comprehensive psychosocial assessment with their midwife?

ProblemWhile comprehensive psychosocial assessment is recommended as part of routine maternity care, unless women engage and disclose, psychosocial risk will not be identified or referred in a timely manner. We need to better understand and where possible overcome the barriers to disclosure if we are to reduce mental health morbidity and complex psychosocial adversity.AimsTo assess pregnant women’s attitude to, and reasons for non-disclosure at, comprehensive psychosocial assessment with their midwife.MethodsData from 1796 pregnant women were analysed using a mixed method approach. After ascertaining women’s comfort with, attitude to, and non-disclosure at psychosocial screening, thematic analysis was used to understand the reasons underpinning non-disclosure.Findings99% of participants were comfortable with the assessment, however 11.1% (N = 193) reported some level of nondisclosure. Key themes for non-disclosure included (1) Normalising and negative self-perception, (2) Fear of negative perceptions from others, (3) Lack of trust of midwife, (4) Differing expectation of appointment and (5) Mode of assessment and time issues.DiscussionFactors associated with high comfort and disclosure levels in this sample include an experienced and skilled midwifery workforce at the study site and a relatively advantaged and mental health literate sample. Proper implementation of psychosocial assessment policy; setting clear expectations for women and, for more vulnerable women, extending assessment time, modifying mode of assessment, and offering continuity of midwifery care will help build rapport, improve disclosure, and increase the chance of early identification and intervention.ConclusionsThis study informs approaches to improving comprehensive psychosocial assessment in the maternity setting.