The relationship between sleep and working memory in children with neurological conditions

The objective of this study is to investigate whether sleep problems might account for the increased working memory deficits observed in school-aged children with neurological conditions. A novel, transdiagnostic approach to the investigation was chosen, and sleep is treated as a process that can potentially account for working memory difficulties across a range of neurological conditions. Prevalence estimates of sleep problems are also examined. Archival data of 237 children aged 6 to 11 years were collected from a Western Australian statewide neuropsychological service for the period 26 July 2011 to 14 January 2014. Measures of parent-reported sleep quality, snoring, and daytime sleepiness were obtained, in addition to objective measures of verbal and spatial working memory, storage capacity, and processing speed. The results of the data analysis reveal that over one third of participants reported having clinically-significant levels of sleep problems and that poor sleep quality is significantly associated with verbal working memory difficulties. This association remains after partialling out the variance contributed to performance by storage capacity and processing speed, suggesting that sleep is impacting upon an executive component of working memory. No other significant associations are observed. The results suggest that poor sleep quality is associated with an executive component of verbal (rather than spatial) working memory in children with neurological conditions. This has implications for the biological mechanisms thought to underlie the relationship between sleep and cognition in children. The results also demonstrate the clinical utility of a transdiagnostic approach when investigating sleep and cognition in children with neurological conditions.     

The relationship between sleep problems and working memory in children born very preterm

In two studies, the relationship between sleep and working memory performance was investigated in children born very preterm (i.e., gestation less than 32 weeks) and the possible mechanisms underlying this relationship. In Study 1, parent-reported measures of snoring, night-time sleep quality, and daytime sleepiness were collected on 89 children born very preterm aged 6 to 7 years. The children completed a verbal working memory task, as well as measures of processing speed and verbal storage capacity. Night-time sleep quality was found to be associated with verbal working memory performance over and above the variance associated with individual differences in processing speed and storage capacity, suggesting that poor sleep may have an impact on the executive component of working memory. Snoring and daytime sleepiness were not found to be associated with working memory performance. Study 2 introduced a direct measure of executive functioning and examined whether sleep problems would differentially impact the executive functioning of children born very preterm relative to children born to term. Parent-reported sleep problems were collected on 43 children born very preterm and 48 children born to term (aged 6 to 9 years). Problematic sleep was found to adversely impact executive functioning in the very preterm group, while no effect of sleep was found in the control group. These findings implicate executive dysfunction as a possible mechanism by which problematic sleep adversely impacts upon cognition in children born very preterm, and suggest that sleep problems can increase the cognitive vulnerability already experienced by many of these children.     

The Childhood Executive Functioning Inventory (CHEXI): Factor structure,measurement invariance,and correlates in US preschoolers

This study tests the factor structure, measurement invariance, and correlates of the Childhood Executive Functioning Inventory (CHEXI) with a large and diverse sample of 3- to 5-year-olds (n = 844). Consistent with previous studies, a two-factor model that distinguishes working memory from inhibition provides the best fit to the observed data. This two-factor model has been shown to demonstrate strong measurement invariance for different subgroups of children (boys vs. girls, high vs. low income). Whereas boys tend to have greater working memory and inhibition difficulties (Cohen’s d = 0.15 and 0.20, respectively), children from low-income households tend to have more working memory problems than their peers from high-income households (Cohen’s d = 0.25). Finally, correlations between CHEXI scores, examiner reports of child behavior, and child performance on a battery of executive function (EF) tasks were investigated. CHEXI scores were found to be more consistently related to examiner reports of child behavior than child performance on EF tasks. Tthe strengths and weaknesses of the CHEXI as a questionnaire measure of EF are discussed, and directions for future research are suggested.     

Immigrant Families’ Perception of the Causes,First Manifestations,and Treatment of Autism Spectrum Disorder

Compared to families from their host country, families from immigrant backgrounds who have a child with autism spectrum disorder (ASD) tend to experience greater difficulties in accessing, using, and complying with intervention services for their child. This disparity may be partially accounted for by cultural differences in how families perceive the causes and symptoms of ASD as well as their treatment priorities. The present study sought to document these perceptions in immigrant families living in a Canadian city. Forty-five parents from Latin America, Africa, Western and Eastern Europe, the Caribbean, East Asia, and the Middle East participated in a semi-structured interview. These data were examined qualitatively through thematic analysis to first document all parents’ perceptions, then to contrast mothers’ and fathers’ responses, and finally to examine common themes as a function of country of origin. The most frequently mentioned causes of ASD were environmental factors such as vaccines and diet. Moreover, some participants did not know the cause of their child’s ASD. The majority of parents cited the absence of speech as one of the first symptoms noted in their child. Priorities for intervention varied: mothers tended to prioritize speech therapy, whereas fathers favored support in school. Taken as a whole, these findings highlight the need to implement informational programs for these families.     

The Castration Complex

ABSTRACT

Theoretical formulations of the castration complex have changed as psychoanalytic theory has developed. The author briefly reviews the literature and asserts that analyzing the set of fantasies related to potential or imagined castration continues to be clinically quite important. Understanding these unconscious fantasies provides a window into the individual's experience of his or her body in relation to those of important others throughout development. A case is provided to illustrate this, and to discuss the ways in which several different ways of thinking about castration fantasies contributed something essential to this analysis.     

The Energy Walk: Experimenting with Aesthetic Methods in STS?

Abstract

In 2014 the research group Alien Energy, based at the IT University of Copenhagen, performed an experiment into the potential of creative intervention as an ethnographic method, in researching the development of new energy forms, such as wave- and geothermal energy. To this end the Energy Walk was created: a carefully choreographed and digitally guided audio walk leading the participant around the harbour area of the Danish town Hanstholm, whilst telling stories of energy and infrastructures. In this paper I argue, that the walk manoeuvres a layered landscape of energetic and infrastructural visibility and invisibility, hereby sensitizing the participant to the manifold energy forms constantly present in our daily lives. Drawing on the aesthetic philosophy of John Dewey I argue, that in doing so, the walk effectively facilitates what he calls an aesthetic experience, and suggest that the walk might best be understood in terms of aesthetic experimentation as a relevant method in STS research.     

Applicant Reactions to Selection Events: Four studies into the role of attributional style and fairness perceptions

In four studies, applicants’ (N = 478) organizational attractiveness perceptions and recommendation intentions following selection outcomes were measured. In three field studies, actual applicants’ perceptions were measured in authentic, high‐stakes application contexts, both preprocedure and postoutcome. A fourth, hypothetical, study was added to increase internal validity. Consistent positive relationships between procedural fairness and reactions were found. Further, attributional style moderated the distributive fairness–attractiveness relationship in the field studies, but not in the laboratory study. In general, optimistically attributing applicants reported higher organization attraction than less optimistic individuals when the outcome was perceived as fair, but lower attraction when the outcome was perceived as unfair. For recommendation intentions, results were less consistent. Implications for future research and practice are discussed.