Modern variable selection for longitudinal semi-parametric models with missing data

Penalized methods for variable selection such as the Smoothly Clipped Absolute Deviation penalty have been increasingly applied to aid variable section in regression analysis. Much of the literature has focused on parametric models, while a few recent studies have shifted the focus and developed their applications for the popular semi-parametric, or distribution-free, generalized estimating equations (GEEs) and weighted GEE (WGEE). However, although the WGEE is composed of one main and one missing-data module, available methods only focus on the main module, with no variable selection for the missing-data module. In this paper, we develop a new approach to further extend the existing methods to enable variable selection for both modules. The approach is illustrated by both real and simulated study data.     

Echoic and Self-Echoic Responses in Children

Eleven typically developing children were assessed on the accuracy of prompted self-echoic responses following a 5-s delay from their initial echoic response, replicating procedures in Esch, Esch, McCart, and Petursdottir (2010) that compared discrepancies between echoic and self-echoic scores of autistic and typically developing children following a 2-s delay. We compared the two studies in terms of age, level tested, and echoic/self-echoic discrepancy scores. Age and test level differences were found to be statistically significant. Results are discussed in terms of discrepant self-echoic performance and self-echoic rehearsal as it relates to participant age, test level, motivating variables, and the development of complex behavior.     

The Role of Parental Indulgence and Economic Stress in Life Satisfaction: Differential Perceptions of Parents and Adolescents

The purpose of this study was to determine if there were differences between adolescents and parents in their perceptions of parental indulgence, stress (economic and life), and life satisfaction. In addition, using the conceptual frameworks of family ecosystems and developmental theory, the relationships between the three types of parental indulgence (soft structure, overnurturance, and giving too much), economic stress, life stress, and life satisfaction were examined for parents and adolescent children. Findings indicated that adolescents perceived higher levels of stress and soft structure as compared to their parents, whereas parents perceived higher levels of economic stress. Additionally, each type of parental indulgence affected parent and adolescent life stress and life satisfaction differently. Implications for research and practice are discussed.     

Adolescents' Physiological Reactions to Their Parents' Negative Disclosures About the Other Parent in Divorced and Nondivorced Families

The purpose of this study was to determine how adolescents in divorced and nondivorced families respond psychologically and physiologically to their parents' negative disclosures when talking about their parents' relationship. The study also investigated how parents respond to their own disclosures about their relationship with the other parent. In general, the results illustrate the important role that adolescents' feelings of being caught can contribute to their well-being. The findings also supported the hypothesis that the valence of parental disclosures was a more important consideration than its frequency in the understanding of adolescents' reactions to their parents' disclosures, especially for adolescents from divorced families. Disclosure valence was also associated with parental anxiety, such that disclosure negativity predicted elevations in parents' anxiety during the discussion. Ultimately, children from divorced families who already felt caught between their parents and whose parents tended to disclose negative information about the other parent to them were more likely than other adolescents to report feeling anxious during that conversation. The results for changes in physiological arousal were not significant and were not consistent with the results for self-reported anxiety.     

Prevalence of clinical autistic traits within a homeless population: barriers to accessing homeless services

ABSTRACT

Recent research suggests a high prevalence rate of Autism Spectrum Conditions (ASC) amongst the homeless population. Although, it is well-documented that autistic people experienced many barriers to accessing health services, little is known about their challenges in accessing homeless services. Thus, the present study aimed to measure prevalence of high levels of autistic traits, and to identify barriers that prevent autistic people accessing homeless services. Participants recruited from homeless services (n?=?65) completed the Autism Quotient-10 (AQ-10) alongside a questionnaire regarding perceived accessibility of homeless services. Results revealed that 18.5% of participants scored Above the Clinical Threshold of the AQ-10 (ACT-AQ). Moreover, the ACT-AQ group reported that encountering big groups in shared accommodation represent a significant barrier to engaging with homeless services. Further research is needed to identify the full degree of ASC representation and the factors that might prevent autistic homeless people accessing homeless services, and thus overcoming homelessness.     

Teacher Outcomes from the Second Step Child Protection Unit: Moderating Roles of Prior Preparedness,and Treatment Acceptability

ABSTRACT

Teachers play a critical role in child sexual abuse (CSA) prevention and intervention efforts. We examined the impact of the Second Step Child Protection Unit (CPU) on improving teacher awareness, attitudes, and teacher–student relations for 161 teachers. Teacher baseline scores and treatment acceptability were examined as moderators. Structural equation modeling (SEM) revealed a significant effect of the CPU on teachers’ awareness, attitudes, and teacher–student relations, particularly for teachers with lower prior knowledge, attitudes, and student relationships. Teachers’ acceptability of the CPU also moderated outcomes, where a higher level of acceptability of CSA interventions was associated with an increase in outcomes.     

Breastfeeding and employment: A propensity score matching approach

ABSTRACT

It is well established within the scholarship on work and the family that many women experience difficulty juggling work and family responsibilities. Challenges to breastfeeding after giving birth are a specific manifestation of this work–family conflict. Many women report that they are unable to continue breastfeeding upon return to paid work. In this article, I analyze a subsample of 746 women from the United States Infant Feeding Practices Survey II to assess the effect of new mothers’ employment status and workplace characteristics on breastfeeding duration. This research reveals that new mothers who return to paid employment within three months of giving birth breastfeed an average of five fewer weeks than new mothers who do not return to paid work for three months or more. In addition, among mothers who return to paid work within three months, full-time workers breastfeed an average of more than 15 fewer weeks than part-time workers. These substantial differences in the duration of breastfeeding suggest that women face significant obstacles to combining paid work and mothering in the postpartum period.