Assessing Confidence Intervals for the Tail Index by Edgeworth Expansions for the Hill Estimator

AMS classifications: 62G20, 62G32;asymptotic normality;confidence intervals;Edgeworth expansions;extreme value index;Hill estimator;regular variation;tail index

Edgeworth Expansions for the Distribution Function of the Hill Estimator

We establish Edgeworth expansions for the distribution function of the centered and normalized Hill estimator for the positive extreme value index.estimation;variation;statistical distribution

Unbiased Tail Estimation by an Extension of the Generalized Pareto Distribution

AMS classifications: 62G20; 62G32;bias;exchange rate;heavy tails;peaks-over-threshold;regular variation;tail index

Assessing Confidence Intervals for the Tail Index by Edgeworth Expansions for the Hill Estimator

AMS classifications: 62G20, 62G32;

Unbiased Tail Estimation by an Extension of the Generalized Pareto Distribution

AMS classifications: 62G20; 62G32;

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

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

Transfer from implicit to explicit phonological abilities in first and second language learners

Children's abilities to process the phonological structure of words are important predictors of their literacy development. In the current study, we examined the interrelatedness between implicit (i.e., speech decoding) and explicit (i.e., phonological awareness) phonological abilities, and especially the role therein of lexical specificity (i.e., the ability to learn to recognize spoken words based on only minimal acoustic-phonetic differences). We tested 75 Dutch monolingual and 64 Turkish–Dutch bilingual kindergartners. SEM analyses showed that speech decoding predicted lexical specificity, which in turn predicted rhyme awareness in the first language learners but phoneme awareness in the second language learners. Moreover, in the latter group there was an impact of the second language: Dutch speech decoding and lexical specificity predicted Turkish phonological awareness, which in turn predicted Dutch phonological awareness. We conclude that language-specific phonological characteristics underlie different patterns of transfer from implicit to explicit phonological abilities in first and second language learners

Lexical specificity training effects in second language learners

Children who start formal education in a second language may experience slower vocabulary growth in that language and subsequently experience disadvantages in literacy acquisition. The current study asked whether lexical specificity training can stimulate bilingual children's phonological awareness, which is considered to be a precursor to literacy. Therefore, Dutch monolingual and Turkish-Dutch bilingual children were taught new Dutch words with only minimal acoustic-phonetic differences. As a result of this training, the monolingual and the bilingual children improved on phoneme blending, which can be seen as an early aspect of phonological awareness. During training, the bilingual children caught up with the monolingual children on words with phonological overlap between their first language Turkish and their second language Dutch. It is concluded that learning minimal pair words fosters phoneme awareness, in both first and second language preliterate children, and that for second language learners phonological overlap between the two languages positively affects training outcomes, likely due to linguistic transfe