Source credibility and the processing of refutation texts

The knowledge revision components framework (KReC) outlines the basic comprehension processes and text factors that can be accentuated to increase the potential for knowledge revision during reading. The goal of the present study was to explore source credibility as one such text factor. In Experiment 1, we established the utility of a set of refutation texts in influencing knowledge revision. Participants read ten refutation and ten control texts. The participants had faster reading times and higher posttest scores for the refutation than for the control texts, providing evidence for knowledge revision. In Experiment 2, we examined the influence of source credibility under normal reading conditions. Participants read 20 refutation texts, ten with high-credibility and ten with low-credibility sources. The reading times and posttest scores suggested that knowledge revision unfolded successfully, independent of credibility. Using the same texts, in Experiment 3 we examined the influence of direct instructions that made the credibility of the source of information more salient. When the credibility of the source was made salient, the revision process was disrupted in the low-credibility condition, as evidenced by slower reading times and lower posttest scores than in the high-credibility condition. The results add to our understanding of the factors that constrain knowledge revision during the reading of refutation texts, and are discussed in the context of the extant literature and KReC.     

Frontal cortex functioning in the infant broader autism phenotype

Atypical attention has been proposed as a marker of the broader autism phenotype. In the present study we investigated this and the related process of inhibitory control at the youngest possible age through the study of infant siblings of children with an autism spectrum disorder (Sibs-ASD). Both attention and inhibition have been related to the frontal cortex of the brain. Nine- to ten-month-old Sibs-ASD and low-risk control infants completed the Freeze-Frame task, in which infants are encouraged to inhibit looks to peripherally presented distractors whilst looking at a central animation. The attractiveness of the central stimulus is varied in order to investigate the selectivity of infants’ responses. In line with previous studies, it was found that a subset of Sibs-ASD infants had difficulty disengaging attention from a central stimulus in order to orient to a peripheral stimulus. The Sibs-ASD group also showed less Selective Inhibition than controls. However, Sibs-ASD infants did demonstrate Selective Inhibitory Learning. These results provide preliminary evidence for atypical frontal cortex functioning in the infant broader autism phenotype.     

Using the 4/5ths Rule as an Outcome in Regression Analyses: A Demonstrative Simulation

The adverse impact associated with personnel practices is an important issue for personnel psychologists. The purpose of this simulation study is to demonstrate the consequences of using the 4/5ths rule and the adverse impact ratio in analyses designed to predict adverse impact from human resource management (HRM) strategies. Results show that increasing (1) the total number of selections made and (2) the minority representation in the candidate pool may influence adverse impact differently depending on how adverse impact is measured. Specifically, using the 4/5ths rule as an outcome in logistic regression analyses led to unexpected findings regarding the effectiveness of HRM strategies designed to reduce adverse impact. On the other hand, using the adverse impact ratio as an outcome in linear regression analyses produced to intuitive findings.     

Bewältigung des unerfüllten Kinderwunsches

The article reviews current research in relation to two aspects of involuntary childlessness; firstly, the extent to which involuntary childlessness can be considered a critical life-event and secondly, the short-term effects of childlessness on life-satisfaction and well-being. A study is reported in which 68 middle-aged women (45 to 65 years) who are long term childless because of infertility, are investigated. The study focuses on the extent to which unfilled desire for a child has long term effects on well-being and life-satisfaction. The control group comprised 68 women who did not suffer from fertility problems and became pregnant spontaneously. Life-satisfaction and well-being were assessed using the life-satisfaction questionaire (FLZ; Fahrenberg et al. 2000) and the SCL-90-R (Symptome-Checklist, Derogatis, the German version of Franke 1995). The study shows clearly that psychological well-being is significantly lower in childless middle-aged women compared to women of the same mean age, who have a child. No significant differences were found in social well-being and health. The results support the view that unwanted childlessness may become a chronic stressor. Unintentionally childless middle-aged women do not constitute a clinical group whose need for psychotherapy is urgent. However, the development of specific counselling for women who fail to conceive and those who remain childless in the long term is recommended.     

Paired-Associate Learning in Attention-Deficit/Hyperactivity Disorder as a Function of Hyperactivity-Impulsivity and Oppositional Defiant Disorder

A paired-associate learning (PAL) test was administered to 22 community volunteers without disruptive disorders and 197 children (7.5–13.5 years-old) presenting with the inattentive and combined subtypes of attention-deficit/hyperactivity disorder (ADHD) either in combination with or without oppositional defiant disorder (ODD). Participants were screened for learning disorders. In comparison to non-ADHD participants, children with ADHD achieved worse PAL and made errors rated as more acoustically and less semantically similar to the correct paired associates. These deficits were not related to hyperactivity–impulsivity or comorbid ODD. These results suggest that ADHD children are less competent at PAL and use less efficient learning strategies than their non-ADHD peers.     

Constraints on effective pictorial and verbal elaboration

Three experiments investigated the conditions under which pictures facilitate learning. In Experiment 1, confusing verbal relationships were supplemented with pictures that illustrated the key concepts in each verbal relationship (base pictures), illustrated the key concepts in more elaborate arbitrary relationships (pictures of arbitrary elaborations), or illustrated the key concepts in ways that helped clarify the verbal relationships (pictures of explanatory elaborations). All three types of pictures facilitated the retention of the verbal relationships, although pictures of explanatory elaborations were superior to other types of visual illustrations. In Experiment 2, the facilitative effects of base pictures depended on a schematically unique illustration of the key concepts in a single image. In Experiment 3, picture facilitation effects were constrained by the type of verbal elaborations that accompanied the pictures. Specifically, base pictures and pictures of arbitrary elaborations did not facilitate the retention of confusing verbal relationships that were elaborated with explanatory information, and actually interfered with the retention of those explanatory elaborations. The implications of these results are discussed.     

Bias and Accuracy of Children's Perceptions of Peer Acceptance: Prospective Associations with Depressive Symptoms

Are depressive symptoms in middle childhood associated with more or less realistic social self-perceptions? At the beginning and end of the school year, children in grades 3 through 5 (n=667) rated how much they liked their classmates, predicted the acceptance ratings they would receive from each of their classmates, and completed self-report measures of perceived acceptance and depressive symptoms. Accuracy of perceived acceptance was indexed by the mean difference between pairs of predicted and received ratings (absolute values). Standardized residual scores created by regressing self-reported perceived acceptance (either predicted ratings or children's responses to a questionnaire measure of perceived peer acceptance) onto peer acceptance ratings formed two measures of bias. Bi-directional associations were found for accuracy of perceived acceptance and depressive symptoms; inaccurate perceptions predicted increases in depressive symptoms and depressive symptoms predicted decreased accuracy. Neither measure of bias predicted changes in depressive symptoms. Depressive symptoms predicted increases in negatively biased perceptions as assessed via questionnaire.     

Temperament, personality, and developmental psychopathology as childhood antecedents of personality disorders

To contribute to the case for a dimensional conceptualization of psychopathology in general and maladaptive personality or personality disorders in particular, the present paper reviews the evidence for a dimensional representation of childhood temperament and personality. The review of temperament and variable-centered as well as person-centered approaches to childhood personality leads us to propose five broadband dimensions that capture individual differences in children and adolescents: extraversion, emotional stability, agreeableness, conscientiousness, and openness/intellect. Our analysis of the CBCL (Achenbach, 1991) and the DIPSI (currently under development at Ghent University), two dimensional models for childhood psychopathology, suggests two common broadband factors, internalizing and externalizing. The relations between the dimensional representation of childhood temperament/personality and psychopathology are documented with data from general population and clinical samples of children and adolescents. The article concludes with a proposal on how the higher-order dimensions emerging from studies of adaptive and maladaptive individual differences in childhood could be integrated in a common dimensional model.     

Policies and perspectives on authorship

Authorship on publications has been described as a “meal ticket” for researchers in academic settings. Given the importance of authorship, inappropriate publication credit is a pertinent ethical issue. This paper presents an overview of authorship problems and policies intended to address them. Previous work has identified three types of inappropriate authorship practices: plagiarism, giving unwarranted credit and failure to give expected credit. Guidelines from universities, journals and professional organizations provide standards about requirements of authors and may describe inappropriate practices; to a lesser extent, they provide guidance for determining authorship order. While policies on authorship may be helpful in some circumstances, they are not panaceas. Formal guidelines may not address serious power imbalances in working relationships and may be difficult to enforce in the face of particular departmental or institutional cultures. In order to develop more effective and useful guidelines, we should gain more knowledge about how students and faculty members perceive policies as well as their understanding of how policies will best benefit collaborators.