Optimizing significance testing of astronomical forcing in cyclostratigraphy

Peer reviewedPublisher PD

Exploring Expressions of Possible Selves with High School and College Students with Learning Disabilities

In this article, we explore a program designed to engage high school and college students with learning disabilities (LD) in conversations about their hopes, expectations, and fears for the future. We explore the mindset of students by focusing on their self-identified passions for life and sense of strengths and limitations. We found that males and females differed in goals related to Academics, Work Ethic, Degree Specific Statements, and Money and Finances. For example, females emphasized “Academic Goals” more frequently than males and focused on topics such as GPA and work ethic in school. However, males made more “Degree Specific Statements” than females, more often emphasizing the desire to be financially stable or have a career with a large income. These differences suggest that college transition staff may want to focus on goals identified by male and female students with LD as a way to be more responsive to student self-identified goals

An integrative study of motivation and goal regulation processes in subclinical anxiety, depression and hypomania

Research has implicated motivation and goal regulation in susceptibility to mood disorders. We studied for the first time key facets of motivation and goal regulation concurrently in relation to affective symptoms. The cross-national sample comprised 510 university students from the United States (n = 279) and United Kingdom (n = 231). Participants completed self-report measures of motivation, conditional goal setting, urgency, depression, anxiety, and mania risk. Structural Equation Modeling results found that behavioral activation system scores correlated negatively with depression and positively with mania risk, but were unrelated to anxiety. High conditional goal setting correlated uniquely with higher depression but not to anxiety or mania risk. Urgency correlated with higher anxiety, depression, and mania risk. Behavioral inhibition system scores correlated negatively with mania risk but unexpectedly did not correlate with anxiety in the multivariate model. The behavioral activation, behavioral inhibition, conditional goal setting, and urgency results showed shared and distinct patterns of relationships with depression, anxiety and mania risk. Our findings indicate unique and common risk vulnerabilities in depressive, anxious, and manic syndromes and extend an integrative knowledge of these syndromes in relation to goal regulation

PCT and beyond: toward a computational framework for ‘intelligent’ communicative systems

Recent years have witnessed increasing interest in ‘intelligent’ autonomous machines such as robots. However, there is a long way to go before autonomous systems reach the level of capabilities required for even the simplest of tasks involving human-robot interaction - especially if it involves communicative behavior such as speech and language. The field of Artificial Intelligence (AI) has made great strides in these areas, and has graduated from high-level rule-based paradigms to embodied architectures whose operations are grounded in real physical environments. What is still missing, however, is an overarching theory of intelligent communicative behavior that informs system-level design decisions. This chapter introduces a framework that extends the principles of Perceptual Control Theory (PCT) toward a remarkably symmetric architecture for a needs-driven communicative agent. It is concluded that, if behavior is the control of perception (the central tenet of PCT), then perception (for communicative agents) is the simulation of behavior

Tobacco use, smoking identities and pathways into and out of smoking among young adults: a meta-ethnography

Background This meta-ethnography investigates how young adults describe their tobacco use, smoking identities and pathways into and out of regular smoking, to inform future smoking prevention and harm reduction interventions. Methods Eight databases were systematically searched using keywords and indexed terms. Studies were included if they presented qualitative data from young adults aged 16–25 reporting smoking histories and/or smoking identities from countries culturally similar to the UK. A systematic and rigorous meta-ethnographic approach was employed, consistent with Noblit and Hare’s methodology. Results Thirty papers were included. Reasons stated for taking up smoking and becoming a smoker included alleviating stress, transforming one’s identity, and coping with the transition to further education, employment or leaving home. Many used smoking to aid acceptance within new peer groups, particularly when alcohol was present. Smoking was also perceived as an act of resistance and a coping mechanism for those with marginalised identities. Barriers to quitting smoking included young adults’ minimisation or denial of the health risks of smoking and not identifying with “being a smoker”. Conclusions This meta-ethnography may provide a blueprint to inform the development of health and wellbeing interventions designed specifically for young adults. Smoking cessation interventions should be co-designed with young adults based on their perceived needs, resonant with their desire to quit in the future at key milestones. Harm reduction interventions should address the social aspect of addiction, without reinforcing stigma, particularly for those with marginalised identities

How coping styles, cognitive distortions, and attachment predict problem gambling among adolescents and young adults

Background and aims: Recent research suggests that youth problem gambling is associated with several factors, but little is known how these factors might influence or interact each other in predicting this behavior. Consequently, this is the first study to examine the mediation effect of coping styles in the relationship between attachment to parental figures and problem gambling. Methods: A total of 988 adolescents and emerging adults were recruited to participate. The first set of analyses tested the adequacy of a model comprising biological, cognitive, and family variables in predicting youth problem gambling. The second set of analyses explored the relationship between family and individual variables in problem gambling behavior. Results: The results of the first set of analyses demonstrated that the individual factors of gender, cognitive distortions, and coping styles showed a significant predictive effect on youth problematic gambling, and the family factors of attachment and family structure did not reveal a significant influence on this behavior. The results of the second set of analyses demonstrated that the attachment dimension of angry distress exerted a more indirect influence on problematic gambling, through emotion-focused coping style. Discussion: This study revealed that some family variables can have a more indirect effect on youth gambling behavior and provided some insights in how some factors interact in predicting problem gambling. Conclusion: These findings suggest that youth gambling is a multifaceted phenomenon, and that the indirect effects of family variables are important in estimating the complex social forces that might influence adolescent decisions to gamble

Sulfation of L-Selectin Ligands by an HEV-Restricted Sulfotransferase Regulates Lymphocyte Homing to Lymph Nodes

AbstractLymphocytes home to lymph nodes, using L-selectin to bind specific ligands on high endothelial venules (HEV). In vitro studies implicate GlcNAc-6-sulfate as an essential posttranslational modification for ligand activity. Here, we show that genetic deletion of HEC-GlcNAc6ST, a sulfotransferase that is highly restricted to HEV, results in the loss of the binding of recombinant L-selectin to the luminal aspect of HEV, elimination of lymphocyte binding in vitro, and markedly reduced in vivo homing. Reactivity with MECA 79, an adhesion-blocking mAb that stains HEV in lymph nodes and vessels in chronic inflammatory sites, is also lost from the luminal aspects of HEV. These results establish a critical role for HEC-GlcNAc6ST in lymphocyte trafficking and suggest it as an important therapeutic target

Predicting psychological distress of informal carers of individuals with major depression or bipolar disorder

Caring for someone with a mental illness is associated with high levels of burden and psychological distress. Understanding these factors could be important to prevent the development of physical and mental health problems in carers. The purpose of the present study was to determine the contribution of coping styles and social support in predicting the psychological distress reported by informal carers (IC) of individuals with major depression or bipolar disorder. IC (n = 72) of adults with a diagnosed depressive illness were recruited from mental health organizations within the community setting. Carers completed the General Health Questionnaire, Brief COPE, and Social Support Questionnaire. Multiple linear regression analysis revealed that 63% of the variance in psychological distress could be accounted for by adaptive and maladaptive coping styles and perceived quantity and satisfaction with social support. Satisfaction with social support (b = 0.508, P < 0.001) and maladaptive coping (b = 0.369; P < 0.001) were significant predictors of psychological distress. These findings suggest that interventions should consider coping styles, specifically the interaction between maladaptive behaviours and enhancement of quality of support, to assist carers to manage psychological distress, especially earlier in the caring role

Optimistic Disclosure Tone and Conservative Debt Policy

We examine the relationship between managerial optimism and debt conservatism (i.e. the low-leverage puzzle). Our analysis demonstrates that optimistic tone, our time-varying optimism measure, significantly decreases leverage. This evidence supports the proposition that optimistic managers who consider external financing as unduly costly use debt conservatively. This reduced reliance on external financing can be explained by our further evidence that optimistic tone significantly increases cash holdings and decreases dividend payment. The negative tone-leverage relation is stronger in the presence of high insider purchase of own stocks which confirms that optimistic tone reflects managerial optimism. This study suggests that managerial optimism can help explain the low-leverage puzzle