67 research outputs found

    Extreme Demand Avoidance in Children with Autism Spectrum Disorder: Refinement of a Caregiver-Report Measure

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    Objectives: Extreme/“pathological” demand avoidance (PDA) describes a presentation found in some children on the autism spectrum, characterized by obsessive resistance to everyday demands and requests. Demands often trigger avoidance behavior (e.g., distraction, excuses, withdrawal into role play). Pressure to comply can lead to escalation in emotional reactivity and behavior that challenges. Methods: Previously, the Extreme Demand Avoidance Questionnaire (EDA-Q) was developed to quantify resemblance to clinical accounts of PDA from caregiver reports. The aim of this study was to refine the EDA-Q using principal components analysis (PCA) and item response theory (IRT) analysis on parent/caregiver-report data from 334 children with ASD aged 5–17 years. Results: PCA and IRT analyses identified eight items that are discriminating indices of EDA traits, and behave similarly with respect to quantifying EDA irrespective of child age, gender, reported academic level, or reported independence in daily living activities. The “EDA-8” showed good internal consistency (Cronbach’s alpha =.90) and convergent and divergent validity with other measures (some of which were only available for a subsample of 233 respondents). EDA-8 scores were not related to parental reports of ASD severity. Conclusions: Inspection of the test information function suggests that the EDA-8 may be a useful tool to identify children on the autism spectrum who show an extreme response to demands, as a starting point for more in-depth assessment

    Parenting Goals: Links with Parenting Strategies in Caregivers of Children with Autism Spectrum Disorder

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    OBJECTIVES: Parenting goals describe the outcomes that parents aim for when interacting with their child. They have received little attention in research with caregivers of children with autism spectrum disorder (ASD). The present study explored different types (dimensions) of parenting goals reported by caregivers of children with ASD, investigated links between these parenting goals and child characteristics, and explored whether parenting goals were linked to reported use of particular parenting strategies. METHODS: Data from 161 caregivers of children with ASD aged 7–18 years revealed two goal dimensions: “Norm Adherence Goals” (i.e. the perceived importance of the child cooperating with the parent, respecting their authority, and behaving well in public); and “Autonomy Support and Relationship Goals” (i.e. the perceived importance of promoting the child’s resilience, wellbeing, and the quality of the parent-child relationship). RESULTS: Parents who reported that norm adherence goals were particularly important to them were more likely to endorse parenting strategies such as setting rules, using rewards, and giving punishments. These parents also reported using less “Accommodation” (e.g. making allowances for their child, being flexible, avoiding triggers). Autonomy support and relationship goals were very strongly endorsed by nearly all parents, and we therefore could not find strong links between the importance of these goals and parenting strategies. CONCLUSION: These findings suggest that parenting goals might be importantly linked to parenting strategies and could be considered in personalizing interventions in clinical practice. Given that parents’ cognitions about their child’s behaviour and their role as parents likely interact with and influence their parenting goals, we argue that future research should investigate parenting goals, cognitions, and behaviours in parallel

    Parenting Strategies Used by Parents of Children with ASD: Differential Links with Child Problem Behaviour

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    Here, we explored the structure of the ‘Parenting Strategies Questionnaire’, a new scale designed to measure parenting strategies for problem behaviour in ASD. We then examined links between child behaviour and parenting in a sample of 222 predominantly-UK parents of ASD children exhibiting behaviour found difficult or challenging. Analysis revealed three parenting subscales: Accommodation, Reinforcement Approaches and Reducing Uncertainty. Both Accommodation and Reducing Uncertainty were linked to child problem behaviour. Child factors explained up to 29% of the variance in Accommodation, with Socially Inflexible Non-compliance the strongest predictor, and up to 24% of the variance in Reducing Uncertainty, with Intolerance of Uncertainty the strongest predictor. Child factors were not related to Reinforcement Approaches. Longitudinal studies investigating these relationships are needed. Autism Spectrum Disorders (ASD) are neurodevelopmental impairments characterised by difficulties with communication, socialisation, and rigid and repetitive behaviours (Americal Psychiatric Association 2013). Problem behaviour (also referred to as ‘behaviour that challenges’ or, in the past, ‘challenging behaviour’) often occurs in children with ASD, and is more severe in ASD than in other clinical populations (e.g., Brereton et al. 2006; Estes et al. 2009). Forms of problem behaviour include oppositionality, failures to comply, destructiveness and explosiveness (e.g., Gadow et al. 2004). These behaviours are thought to reflect a dysregulated emotional state, resulting in outbursts and prolonged emotional reactions (Mazefsky et al. 2018a, b). Problem behaviour may reflect attempts by the child to reduce anxiety or distress by escaping aversive activities, or reactivity reflecting frustration when things are not on their terms (Brewer et al. 2014; Larson 2006). Demands to comply have been identified as a key trigger of reactivity in ASD (Chowdhury et al. 2016). Some individuals appear more reactive to routine demands (e.g., to wash or get dressed), and others to demands in socially challenging or novel situations (e.g., when visiting friends) (Chowdhury et al. 2016). The former ‘demand-specific’ profile resembles accounts of extreme/‘pathological’ demand avoidance (‘PDA’), which describe avoidance of and reactivity to routine demands in children with ASD (Newson et al. 2003). Some accounts of PDA explicitly attribute these behaviours to elevated anxiety and distress in the context of demands (Newson et al. 2003). In contrast, the latter ‘socially inflexible’ profile, may particularly reflect intolerance of uncertainty: the tendency to “react negatively on an emotional, cognitive, and behavioural level to uncertain situations and events” (Buhr and Dugas 2009, p. 216), which characterizes some children with ASD (Boulter et al. 2014; Larson 2006)

    Examining the genetic and environmental associations between autistic social and communication deficits and psychopathic callous-unemotional traits

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    - BACKGROUND: Difficulties in appropriate social interaction are characteristic of both children with autism spectrum disorders and children with callous-unemotional traits (who are at risk of developing psychopathy). Extant experimental studies suggest that the nature of atypical social cognition that characterises these two profiles is not identical. However, 'empathizing' difficulties have been hypothesised for both groups, raising questions about the degree of aetiological separation between social impairments that characterize each disorder. This study explored the relative contribution of independent vs. shared aetiological influences to social and communication impairments associated with autistic traits and callous-unemotional traits, indexed by parent-report in a population-based cohort of twins. - METHODS: Participants were over 5,000 twin pairs from a UK cohort (the Twins Early Development Study; TEDS), assessed for callous-unemotional traits at 7 years and autistic social and communication impairments at 8 years. Multivariate model-fitting was used to explore the relative contribution of independent vs. overlapping genetic/environmental influences on these traits. - RESULTS: Both social and communication impairments and callous-unemotional traits were highly heritable, although the genetic and environmental influences accounting for individual differences on each domain were predominantly independent. - CONCLUSIONS: Extant evidence from experimental and neuro-imaging studies has suggested that, despite some superficially overlapping behaviours, the social difficulties seen in children with autism spectrum disorders and callous-unemotional traits are largely distinct. The current study is the first to demonstrate considerable aetiological independence of the social interaction difficulties seen in children with autism spectrum disorders and those with callous-unemotional traits

    Fears, Reassurance, and Milestones: A Twitter Analysis around World Prematurity Day during the COVID-19 Pandemic

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    Preterm birth (birth &lt;37 completed weeks’ gestation) is common, affecting 10.6% of live births globally (nearly 15 million babies per year). Having a new baby admitted to a neonatal unit often triggers stress and anxiety for parents. This paper seeks to explore experiences of preterm birth via Twitter. The intermingling of COVID-19 restrictions and World Prematurity Day allows for an understanding of both the additional stresses incurred as a consequence of the pandemic and the more “everyday” experiences in the NICU and beyond. The content analysis of the data included 3161 tweets. Three themes were identified: 1. COVID-19 was not the only trauma; 2. Raising awareness, especially World Prematurity Day; and, 3. Baby milestones. These themes highlight the multi-level challenges faced by parents of premature babies and the healthcare professionals involved in their care. The COVID-19 pandemic and the consequent restrictions imposed on parents’ contact with their babies have resulted in immense emotional strain for families. The reported COVID-19 pandemic “baby blind spot” appears to particularly impact this group of babies. Improved understanding of the lived experiences of preterm babies and their families should inform greater awareness and improved support.</jats:p

    Quantitative High Dynamic Range Beam Proling for Fluorescence Microscopy

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    Modern developmental biology relies on optically-sectioning uorescence microscope techniques to produce non-destructive in-vivo images of developing specimens at high resolution in three dimensions. As optimal performance of these techniques is reliant on the three-dimensional (3-D) intensity prole of the illumination employed, the ability to directly record and analyze these proles is of great use to the uorescence microscopist or instrument builder. Though excitation beam proles can be measured indirectly using a sample of uorescent beads and recording the emission along the microscope detection path, we demonstrate an alternative approach where a miniature camera sensor is used directly within the illumination beam. Measurements taken using our approach are solely concerned with the illumination optics as the detection optics are not involved. We present a miniature beam proling device and high dynamic range ux reconstruction algorithm that together are capable of accurately reproducing quantitative 3-D ux maps over a large focal volume. Performance of this beam proling system is veried within an optical test bench and demonstrated for uorescence microscopy by proling the low NA illumination beam of a single plane illumination microscope. The generality and success of this approach showcases a widely- exible beam amplitude diagnostic tool for use within the life sciences

    What lies beneath: exploring links between asylum policy and hate crime in the UK

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    This paper explores the link between increasing incidents of hate crime and the asylum policy of successive British governments with its central emphasis on deterrence. The constant problematisation of asylum seekers in the media and political discourse ensures that 'anti-immigrant' prejudice becomes mainstr earned as a common-sense response. The victims are not only the asylum seekers hoping for a better life but democratic society itself with its inherent values of pluralism and tolerance debased and destabilised

    Long term records of erosional change from marine ferromanganese crusts

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    Ferromanganese crusts from the Atlantic, Indian and Pacific Oceans record the Nd and Pb isotope compositions of the water masses from which they form as hydrogenous precipitates. The10Be/9Be-calibrated time series for crusts are compared to estimates based on Co-contents, from which the equatorial Pacific crusts studied are inferred to have recorded ca. 60 Ma of Pacific deep water history. Time series of ɛNd show that the oceans have maintained a strong provinciality in Nd isotopic composition, determined by terrigenous inputs, over periods of up to 60 Ma. Superimposed on the distinct basin-specific signatures are variations in Nd and Pb isotope time series which have been particularly marked over the last 5 Ma. It is shown that changes in erosional inputs, particularly associated with Himalayan uplift and the northern hemisphere glaciation have influenced Indian and Atlantic Ocean deep water isotopic compositions respectively. There is no evidence so far for an imprint of the final closure of the Panama Isthmus on the Pb and Nd isotopic composition in either Atlantic or Pacific deep water masses
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