A REVIEW OF SYSTEMS COINTEGRATION TESTS

The literature on systems cointegration tests is reviewed and the various sets of assumptions for the asymptotic validity of the tests are compared within a general unifying framework. The comparison includes likelihood ratio tests, Lagrange multiplier and Wald type tests, lag augmentation tests, tests based on canonical correlations, the Stock-Watson tests and Bierens' nonparametric tests. Asymptotic results regarding the power of these tests and previous small sample simulation studies are discussed. Further issues and proposals in the context of systems cointegration tests are also considered briefly. New simulations are presented to compare the tests under uniform conditions. Special emphasis is given to the sensitivity of the test performance with respect to the trending properties of the DGP.     

Socio-economic patterns of sport demand and ageing

Due to the demographic situation in nowadays societies, physical activity, and sport expenditure have to be analysed from a demographic as well as socio-economical perspective. This means that determinants such as age, gender, nationality/ethnicity, income, time, educational level, profession, and social status have to be taken into account. However, when comparing the various studies, the different methods of analysis and different operationalisation of variables have to be considered. This is in particular vital investigating age. Whilst cross-sectional studies point out that physical activity generally decreases with increasing age, longitudinal analyses come to different results. Previous studies indicate that pertaining to gender more men take part in sports than women. However, considering period and cohort effects, recent longitudinal studies showed that women participate more in sport than in the past. Besides, it was found out that men generally tend to spend more money on sports than women do. A further finding is that the educational level influences physical activity positively. Research revealed that income had a positive impact on both, physical activity and sport expenditure.     

Life expectancy as a constructed belief: Evidence of a live-to or die-by framing effect

Life expectations are essential inputs for many important personal decisions. We propose that longevity beliefs are responses constructed at the time of judgment, subject to irrelevant task and context factors, and leading to predictable biases. Specifically, we examine whether life expectancy is affected by the framing of expectations questions as either live-to or die-by, as well as by factors that actually affect longevity such as age, gender, and self-reported health. We find that individuals in a live-to frame report significantly higher chances of being alive at ages 55 through 95 than people in a corresponding die-by frame. Estimated mean life expectancies across three studies and 2300 respondents were 7.38 to 9.17 years longer when solicited in a live-to frame. We are additionally able to show how this framing works on a process level and how it affects preference for life annuities. Implications for models of financial decision making are discussed.     

Part II: Multisystemic Therapy: Addressing Racial Disparity and Its Effectiveness With Families From Diverse Racial and Ethnic Backgrounds

Disparities in health and mental health care delivered to racial and ethnic minorities became a focus of national policy following reports of the Institute of Medicine (IOM, 2002 Institute of Medicine . ( 2002 ). Unequal treatment: Confronting racial and ethnic disparities in health care . Washington , DC : National Academies Press . [Google Scholar]) and the Surgeon General (USDHHS, 2001). The Surgeon General (USDHHS, 2001) reported racial and ethnic minorities experience disparities in availability and quality of mental health services compared to whites. Two challenges that intersect and compound each other are the disproportionately high numbers of African American children in child welfare with unmet mental health needs remaining in their homes or placed in relative's homes after a substantiation of child maltreatment (USDHHS, 2002 Institute of Medicine . ( 2002 ). Unequal treatment: Confronting racial and ethnic disparities in health care . Washington , DC : National Academies Press . [Google Scholar]) and the lack of culturally appropriate, effective home-based treatments available to them. This study compared outcomes for the youth who received Multisystemic Therapy (MST) controlling for the impact of race and ethnicity. The findings provide further evidence for child welfare practitioners to consider when working with children and families from diverse populations in decision-making.     

Social dimensions of gradients in urban ecosystems

Urban ecosystems are complex mosaics in which the biophysical characteristics are transformed over time by a concentrated, diverse set of human activities. Understanding their complexity requires the continuing development of interdisciplinary approaches. The use of gradient approaches has pointed towards the need to examine in greater detail the roles of human influences. In this paper, I propose the addition of three social dimensions to characteristics defining urban gradients: landuse, land management effort, and historical context. These dimensions correspond with major types of social activities that modify the physical environment. They are intended to augment research by explicitly elaborating on the social factors contributing to the variation along the complex, indirect gradients that typify urban areas.The diversity of urban landuses has numerous influences, obvious and subtle, on the complex urban land gradients. Incorporating new information on historical and spatial characteristics of management practices supports more direct fine-scale analyses of the impact of human activities on the environment. This path of inquiry also requires engaging in more detailed research on historical dimensions of urban development in conjunction with biophysical analyses. Examples from Columbia, South Carolina, illustrate the ways that social and historical processes contribute to urban ecology.     

Why Do Men Report More Opposite-Sex Sexual Partners Than Women? Analysis of the Gender Discrepancy in a British National Probability Survey

In a closed population and defined time period, the mean number of opposite-sex partners reported by men and women should be equal. However, in all surveys, men report more partners. This inconsistency is pivotal to debate about the reliability of self-reported sexual behavior. We used data from the third National Survey of Sexual Attitudes and Lifestyles (Natsal-3), a probability sample survey of the British population, to investigate the extent to which survey sampling, accounting strategies (e.g., estimating versus counting), and (mis)reporting due to social norms might explain the inconsistency. Men reported a mean of 14.14 lifetime partners; women reported 7.12. The gender gap of 7.02 reduced to 5.47 after capping the lifetime partner number at the 99th percentile. In addition, adjusting for counting versus estimation reduced the gender gap to 3.24, and further adjusting for sexual attitudes narrowed it to 2.63. Together, these may account for almost two-thirds of the gender disparity. Sampling explanations (e.g., non-U.K.-resident partners included in counts; sex workers underrepresented) had modest effects. The findings underscore the need for survey methods that facilitate candid reporting and suggest that approaches to encourage counting rather than estimating may be helpful. This study is novel in interrogating a range of potential explanations within the same nationally representative data set.     

In Their Own Words: Challenges Facing Youth Aging Out of Foster Care

Since 1999 there has been a renewed effort addressing the challenges youth face exiting foster care in adolescence, yet outcomes for most youth are still indicating heartbreaking results and it is still not clear what more is needed. Presented is a study addressing what is needed for successful transition. Three major themes emerged; youth focused practice, need for collaboration and better communication with youth, and unmet needs and permanent connections.     

Barriers to Implementing a Mentoring Program for Youth in Foster Care: Implications for Practice and Policy Innovation

The aim of this article is to report on the findings of an evaluation of a youth in foster care mentoring pilot program and the difficulty that arises when a program is not well implemented. The pilot program and evaluation of its effectiveness were mandated by the Texas 80th Legislature through the passing of HB 3008. Big Brothers Big Sisters of North Texas implemented the pilot to match youth in foster care age 14 years and older, who participate on a voluntary basis and who have been screened for participation by the Texas Department of Family and Protective Services (DFPS) with an adult mentor. As part of the pilot, youth were to receive 8 h of face-to-face time, and at least 1 h of phone, email, or text contact with their mentor. Though there were problems with implementation of the mentoring pilot, responses on the confidential youth survey suggest that those who did participate had positive experiences. Based on responses on the survey from the youth and based on the existing empirical literature on the benefits of mentoring programs for trouble youth and following the recommendations presented in this article the mentoring programs should be encouraged for youth aging out of foster care.     

Estimating the Prevalence of Sexual Function Problems: The Impact of Morbidity Criteria

Establishing the clinical significance of symptoms of sexual dysfunction is challenging. To address this, the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) introduced two new morbidity criteria (duration and symptom severity) to the existing criteria of distress. This study sought to establish the impact of these three criteria on the population prevalence of sexual function problems. The data come from a national probability survey (Natsal-3) and are based on 11,509 male and female participants aged 16–74, reporting at least one sexual partner in the past year. The key outcomes were: proportion of individuals reporting proxy measures of DSM-5 problems, and the proportion of those meeting morbidity criteria. We found that among sexually active men, the prevalence of reporting one or more of four specific sexual problems was 38.2%, but 4.2% after applying the three morbidity criteria; corresponding figures for women reporting one or more of three specific sexual problems, were 22.8% and 3.6%. Just over a third of men and women reporting a problem meeting all three morbidity criteria had sought help in the last year. We conclude that the DSM-5 morbidity criteria impose a focus on clinically significant symptoms.     

Family structure, time constraints, and sport participation

Recent research emphasizes the importance of economic factors on sport participation. We extend this by examining the role played by time constraints and family structure in survey data from Rheinberg, Germany. Based on empirical models that account for the two-part decision—the decision to participate and the decision about how long to participate—involved, we find that time constraints in the form of time spent caring for children and relatives and family structure in the form of the presence of children reduce both the likelihood that individuals participate and the time spent taking part in sports.