Executive functions in children with Autism Spectrum Disorders

Executive dysfunction is a characteristic impairment of individuals with Autism Spectrum Disorders (ASD). However whether such deficits are related to autism per se, or to associated intellectual disability is unclear. This paper examines executive functions in a group of children with ASD (N = 54, all IQ?70) in relation to a typically developing control group individually matched on the basis of age, gender, IQ and vocabulary. Significant impairments in the inhibition of prepotent responses (Stroop, Junior Hayling Test) and planning (Tower of London) were reported for children with ASD, with preserved performance for mental flexibility (Wisconsin Card Sorting Task) and generativity (Verbal Fluency). Atypical age-related patterns of performance were reported on tasks tapping response inhibition and self-monitoring for children with ASD compared to controls. The disparity between these and previous research findings are discussed. A multidimensional notion of executive functions is proposed, with difficulties in planning, the inhibition of prepotent responses and self-monitoring reflecting characteristic features of ASD that are independent of IQ and verbal ability, and relatively stable across the childhood years.     

Bergmann’s dilemma: exit strategies for internalists

Michael Bergmann claims that all versions of epistemic internalism face an irresolvable dilemma. We show that there are many plausible versions of internalism that falsify this claim. First, we demonstrate that there are versions of “weak awareness internalism” that, contra Bergmann, do not succumb to the “Subject’s Perspective Objection” horn of the dilemma. Second, we show that there are versions of “strong awareness internalism” that do not fall prey to the dilemma’s “vicious regress” horn. We note along the way that these versions of internalism do not, in avoiding one horn of the dilemma, succumb to the dilemma’s other horn. The upshot is that internalists have many available strategies for avoiding dilemmatic defeat.     

A generalized least squares regression approach for computing effect sizes in single-case research: application examples

A new method for deriving effect sizes from single-case designs is proposed. The strategy is applicable to small-sample time-series data with autoregressive errors. The method uses Generalized Least Squares (GLS) to model the autocorrelation of the data and estimate regression parameters to produce an effect size that represents the magnitude of treatment effect from baseline to treatment phases in standard deviation units. In this paper, the method is applied to two published examples using common single case designs (i.e., withdrawal and multiple-baseline). The results from these studies are described, and the method is compared to ten desirable criteria for single-case effect sizes. Based on the results of this application, we conclude with observations about the use of GLS as a support to visual analysis, provide recommendations for future research, and describe implications for practice.     

Comparing Idiothetic, Ipsative, and Normative Indices of Consistency

ABSTRACT Lamiell's (1981) “idiothetic” index has been praised for raising significant conceptual and methodological issues, but Paunonen and Jackson (1986a) indicated that it might not provide any unique information The current study demonstrates that the unique value of the idiothetic index relative to the ipsative, normative, and normative-ipsative indices is dependent in part upon what information is collected and how it is analyzed Subjects completed inventories on three occasions that assessed seven dispositional variables Interindividual analyses indicated a high correlation between the idiothetic method and two of the other models, whereas intra-individual analyses indicated a much lower degree of correlation Intra-individual analyses indicated that the idiothetic method produced higher temporal stability coefficients The idiothetic index provides information not contained in a normative index and it may be more useful to personality researchers for the assessment of temporal stability and for the assessment of traits with extreme base rates     

Traces of Reduction: Marion and Heidegger on the Phenomenon of Religion

In his work, Being Given, Jean‐Luc Marion calls for a phenomenological investigation of the givenness (donation) of the phenomenon. As a phenomenologist of religion, Marion aims to give a philosophical account of the possibility of revelation, something which by definition is unconditionally given. In Being Given, he contends that his phenomenological reduction to unconditional givenness (in the figure of the saturated phenomenon) can account for religious phenomena in a way that respects the subject matter, all the while remaining philosophically neutral. In this paper I argue that Marion's aim to maintain strict philosophical neutrality interferes with his attempt to respect the subject matter of his own investigation, i.e., the givenness of revelation, since revelation is recognizably given, even as possibility, only in the non‐neutral context of an interpretive tradition. I establish the latter claim with recourse to Heidegger's early hermeneutic sketches of ‘primordial Christian religiosity.’ In turn, I call for a phenomenological Destruktion of Marion's work in order to release its potential as a non‐neutral investigation of a distinctively Catholic religiosity.     

The roles of order,distance, and interstitial items in temporal visual statistical learning

Humans are adept at learning regularities in a visual environment, even without explicit cues to structure and in the absence of instruction—this has been termed “visual statistical learning” (VSL). The nature of the representations resulting from VSL are still poorly understood. In five experiments, we examined the specificity of temporal VSL representations. In Experiments 1A, 1B, and 2, we compared recognition rates of triplets and all embedded pairs to chance. Robust learning of all structures was evident, and even pairs of non-adjacent items in a sequentially presented triplet (AC extracted from a triplet composed of ABC) were recognized at above-chance levels. In Experiment 3, we asked whether people could recognize rearranged pairs to examine the flexibility of learned representations. Recognition of all possible orders of target triplets and pairs was significantly higher than chance, and there were no differences between canonical orderings and their corresponding randomized orderings, suggesting that learners were not dependent upon originally experienced stimulus orderings to recognize co-occurrence. Experiment 4 demonstrates the essential role of an interstitial item in VSL representations. By comparing the learning of quadruplet sets (e.g., ABCD) and triplet sets (e.g., ABC), we found learning of AC and BD in ABCD (quadruplet) sets were better than the learning of AC in ABC (triplet) sets. This pattern of results might result from the critical role of interstitial items in statistical learning. In short, our work supports the idea of generalized representation in VSL and provides evidence about how this representation is structured.     

"It Could Be Us!": Cognitive and Social Psychological Factors in UK National Lottery Play

This study examines the cognitive and social psychological factors underlying UK National Lottery play. A total of 384 respondents were asked about their own lottery playing behaviours, their knowledge of lottery odds and their beliefs about the role of skill, chance, luck and optimism in lottery play. Using hypothetical scenarios, respondents were also asked to rate the likelihood of winning the lottery jackpot (matching all six numbers) with number combinations reflecting different levels of apparent randomness, previous matches, near misses and prize size manipulations. Frequency of lottery play was found to be positively correlated with age, income, Instants scratchcard play, gambling on horse/greyhound racing, the football pools, and bingo as well as with beliefs about skill, luck and optimism. Frequency of lottery play was negatively correlated with general education and estimate of relative win likelihoods based on the perceived randomness of number combinations. Planned contrasts revealed that compared to individual (non‐syndicate) players, syndicate lottery players played more regularly and gambled more on the football pools. Results are discussed in the light of current cognitive theories surrounding the misperception of probability and their relation to lottery play and in the need for future models to recognise the social factors inherent in syndicate‐based lottery participation.