View sensitivity increases for same-shape matches if mismatches show pairs of more similar shapes

Lawson, Bülthoff, and Dumbell (2003) found increased view sensitivity when more similar shapes had to be discriminated. Their sequential picture-picture matching studies showed depth-rotated views of novel, complex, 3-D objects. However, with a similar task and stimuli, Hayward and Williams (2000) found no variation in view sensitivity on same-shape match trials depending on whether similar or dissimilar pairs of shapes were shown on mismatch trials. Thus view sensitivity increases from dissimilarshape mismatches to similar-shape mismatches to same-shape matches (Lawson et al., 2003). However, view sensitivity may not increase on same-shape matches if those trials are combined with similarrather than dissimilar-shape mismatches (Hayward & Williams, 2000). The latter result was reexamined here. Matches were view sensitive given even the dissimilar-shape mismatch context. This view sensitivity increased in the medium and especially the hard contexts that showed similar shapes on mismatches. Thus, indirectly increasing shape similarity via mismatch context modulated view-change effects (cf. Hayward & Williams, 2000).     

Predictors of treatment outcome in dually-diagnosed antisocial youth: an initial study of forensic inpatients

The safe and effective management of adolescent offenders is a top priority for inpatient forensic programs. Treatment successes were examined for adolescent offenders on four parameters, specifically hospital course, level of improvement, time to discharge, and rapidity of improvement. Hospital course was predicted primarily by the breadth of polysubstance abuse with modest but independent contributions by psychopathic characteristics, and aggressive conduct-disorder symptoms. An important finding for treatment was that level of improvement at discharge was only marginally affected by psychopathic traits. In addition, rapidity of improvement was predicted only by decreased polysubstance abuse. Approximately one-fourth of the adolescent offenders experienced a substantial decrease in psychopathic characteristics. This finding was unexpected because the generic treatment program did not target the core elements of psychopathy. Even in the absence of nontreatment controls, this diminution of psychopathic traits in 25% of adolescent offenders raises important questions about the temporal stability of these traits and their potential amenability to generic interventions.     

Posttraining increases in REM sleep intensity implicate REM sleep in memory processing and provide a biological marker of learning potential

Posttraining rapid eye movement (REM) sleep has been reported to be important for efficient memory consolidation. The present results demonstrate increases in the intensity of REM sleep during the night of sleep following cognitive procedural/implicit task acquisition. These REM increases manifest as increases in total number of rapid eye movements (REMs) and REM densities, whereas the actual time spent in REM sleep did not change. Further, the participants with the higher intelligence (IQ) scores showed superior task acquisition scores as well as larger posttraining increases in number of REMs and REM density. No other sleep state changes were observed. None of the pretraining baseline measures of REM sleep were correlated with either measured IQ or task performance. Posttraining increases in REM sleep intensity implicate REM sleep mechanisms in further off-line memory processing, and provide a biological marker of learning potential.     

Detecting malingered neurocognitive dysfunction using the reliable digit span in traumatic brain injury

This study assessed the effectiveness of Greiffenstein's Reliable Digit Span (RDS) score for the detection of malingered neurocognitive dysfunction. Participants were 54 traumatic brain injury patients referred for neuropsychological evaluation. Twenty-four met the Slick, Sherman, and Iverson criteria for at least probable malingered neurocognitive dysfunction. The control group was composed of 30 patients without external incentive and who thus did not meet the Slick criteria. All patients completed the digit span test as part of either the WAIS-R or WAIS-III. The RDS scores were calculated, and sensitivity, specificity, and predictive power were examined for several cutoffs. Classification accuracy for the RDS was excellent. Issues related to the clinical application of this technique are discussed.     

The Children of Mothers with Eating Disorders

There is good evidence that children of parents with psychological disorders are themselves at increased risk of disturbances in their development. Although there has been considerable research on a variety of disorders such as depression and alcohol, research on the children of parents with eating disorders has been relatively recent. This paper aims to review the evidence and covers a number of areas, including genetic factors, pregnancy, the perinatal and postpartum period, infancy, and the early years of life, focusing on feeding and mealtimes, general parenting functions, and growth. This is followed by a consideration of psychopathology in the children, parental attitudes to children's weight and shape, and adolescence. What is clear is that although there are numerous case reports and case series, the number of systematic controlled studies is relatively small, and almost nothing has been written about the children of fathers with eating disorders. What is evident from the available evidence is that children of mothers with eating disorders are at increased risk of disturbance, but that the risk depends on a variety of factors, and that difficulties in the children are far from invariable. The paper concludes by summarizing five broad categories of putative mechanisms, based on the evidence to date, by which eating disturbance in parents can influence child development.     

The ontology and temporality of conscience

Philosophers have often posited a foundational calling voice, such that hearing its call constitutes subjects as responsive and responsible negotiators of normative claims. I give the name ldquo;transcendental conscience to that which speaks in this founding, constitutive voice. The role of transcendental conscience is not – or not merely – to normatively bind the subject, but to constitute the possibility of the subject's being bound by any particular, contentful normative claims in the first place. I explore the ontological and temporal status of transcendental conscience, using Heidegger's account of conscience in Being and Time as my textual touchstone. I ask what performative structure the call of conscience might have that would enable it to constitute normative responsiveness, and I raise some temporal conundrums surrounding this structure. I argue that it is incoherent to attempt to give a literal, chronological account of the origin of normative grip and response. I suggest that we can best understand the founding calls of conscience, not as literal events occurring in regular time, but as events that can only show up retrospectively, as occurring in an ever-receding, unlocalizable past, and that these calls can only be figured mythically and metaphorically. Appropriating a Derridean term, I claim that the voice of transcendental conscience must be that of a lsquo;ghost, whose call binds us by haunting us – a haunting that is no less transcendentally necessary for its inability to be translated into a literal historical event.     

Positive mood and executive function: evidence from stroop and fluency tasks

Contrasting predictions have been made about the effects of positive mood states on the performance of frontal lobe tests that tap executive functions such as inhibition, switching, and strategy use. It has been argued that positive mood is likely to improve some cognitive processes, particularly those dependent on the frontal cortex and anterior cingulate of the brain. However, there is some evidence that happy mood may impair executive functioning. The current experiments investigated the effects of positive mood on Stoop and fluency tests, which are frequently used to assess executive function. Positive mood impaired performance on a switching condition of the Stroop test, but improved performance on a creative uses test of fluency. The effect of positive mood on an executive task may therefore depend on whether a task is inherently motivating or is impaired by diffuse semantic activation.