Cognitive correlates of mathematical achievement in children with cerebral palsy and typically developing children

Background . Remarkably few studies have investigated the nature and origin of learning difficulties in children with cerebral palsy (CP). Aims . To investigate math achievement in terms of word‐problem solving ability in children with CP and controls. Because of the potential importance of reading for word‐problem solving, we investigated reading as well. Sample . Children with CP attending either special (n= 41) or mainstream schools (n= 16) and a control group of typically developing children in mainstream schools (n= 16). Method . Group differences in third grade math and reading, controlled for IQ, were tested with analyses of co‐variance (ANCOVAs). Hierarchical regression was used to investigate cognitive correlates of third grade math and reading. Predictors included verbal and non‐verbal IQ measured in first grade, components of working memory (WM) and executive function (EF) measured in second grade, and arithmetic fact fluency and reading measured in third grade. Results . Children with CP in special schools performed significantly worse than their peers on word‐problem solving and reading. There was a trend towards worse performance in children with CP in mainstream schools compared to typically developing children. Conclusions . Impairments of non‐verbal IQ and WM updating predicted future difficulties in both word‐problem solving and reading. Impairments of visuospatial sketchpad and inhibition predicted future word‐problem, but not reading difficulty. Conversely, deficits of phonological loop predicted reading but not word‐problem difficulty. Concurrent arithmetic fact fluency and reading ability were both important for word‐problem solving ability. These results could potentially help to predict which children are likely to develop specific learning difficulties, facilitating early intervention.     

A meta-analysis of the Dark Triad and work behavior: a social exchange perspective

We reviewed studies of the Dark Triad (DT) personality traits--Machiavellianism, narcissism, and psychopathy-and meta-analytically examined their implications for job performance and counterproductive work behavior (CWB). Relations among the DT traits and behaviors were extracted from original reports published between 1951 and 2011 of 245 independent samples (N = 43,907). We found that reductions in the quality of job performance were consistently associated with increases in Machiavellianism and psychopathy and that CWB was associated with increases in all 3 components of the DT, but that these associations were moderated by such contextual factors as authority and culture. Multivariate analyses demonstrated that the DT explains moderate amounts of the variance in counterproductivity, but not job performance. The results showed that the 3 traits are positively related to one another but are sufficiently distinctive to warrant theoretical and empirical partitioning.     

The effect of asymmetrical sample training on retention functions for hedonic samples in rats

Rats were trained in a symbolic delayed matching-to-sample task to discriminate sample stimuli that consisted of the presence of food or the absence of food. Asymmetrical sample training was provided in which one group was initially trained with only the food sample and the other group was initially trained with only the no-food sample. In addition, within each group half of the rats were trained with an illuminated intertrial interval (ITI) and the remaining rats with a dark ITI. While the retention functions did not differ as a function of which sample was trained first, they did differ as a function of the similarity in the illumination conditions during the ITI and the delay interval. Symmetrical retention functions were obtained when the lighting conditions were similar and slightly asymmetrical retention functions were obtained when the lighting conditions were dissimilar. Probe tests confirmed that features of the no-food sample were attended to and used to generate a memory representation for the no-food sample. The results are not consistent with the hypothesis that asymmetrical sample training encourages coding of the sample introduced initially and default responding to the subsequently introduced sample. Rats generate memory representations for both samples when asymmetrical sample training is given with hedonic samples.     

Parental Behaviors During Family Interactions Predict Changes in Depression and Anxiety Symptoms During Adolescence

This study investigated the prospective, longitudinal relations between parental behaviors observed during parent-adolescent interactions, and the development of depression and anxiety symptoms in a community-based sample of 194 adolescents. Positive and negative parental behaviors were examined, with negative behaviors operationalized to distinguish between observed parental expressions of aggression and dysphoria. Results showed that higher levels of parental aggression prospectively predicted higher levels of both depression and anxiety symptoms in adolescents over two-and-a-half years, whereas higher levels of positive parental behaviors prospectively predicted lower levels of depression symptoms only. Parental dysphoric behavior was not related to changes in either symptom dimension. These results suggest that patterns of parental behaviors may be differentially associated with depressive versus anxious outcomes in adolescents, and highlight the potential role for family-focused prevention or treatment interventions aimed at reducing an escalation of depression and anxiety symptoms in adolescence.     

Child Involvement in Interparental Conflict and Child Adjustment Problems: A Longitudinal Study of Violent Families

This study examined whether child involvement in interparental conflict predicts child externalizing and internalizing problems in violent families. Participants were 119 families (mothers and children) recruited from domestic violence shelters. One child between the ages of 7 and 10 years in each family (50 female, 69 male) completed measures of involvement in their parents’ conflicts, externalizing problems, and internalizing problems. Mothers completed measures of child externalizing and internalizing problems, and physical intimate partner violence. Measures were completed at three assessments, spaced 6 months apart. Results indicated that children’s involvement in their parents’ conflicts was positively associated with child adjustment problems. These associations emerged in between-subjects and within-subjects analyses, and for child externalizing as well as internalizing problems, even after controlling for the influence of physical intimate partner violence. In addition, child involvement in parental conflicts predicted later child reports of externalizing problems, but child reports of externalizing problems did not predict later involvement in parental conflicts. These findings highlight the importance of considering children’s involvement in their parents’ conflicts in theory and clinical work pertaining to high-conflict families.     

The Universal Principles of Evolution

Here we identify the core properties of genetic evolution with the intention of providing a unified definition of evolving systems that applies unequivocally in the natural and social sciences. Our definition is: evolution sustains organized systems through high fidelity replication of information. This definition can be broken down into five essential components: (1) high fidelity replication of information with 0% < survival rate < 100%; (2) expendable replication technology distinct from the replication information; (3) inert information that provides no kinetic energy to the replication process; (4) demonstrates a quantifiable resistance to entropy; (5) demonstrates intentionality.     

In Defense of the Moral Significance of Empathy

It is commonly suggested that empathy is a morally important quality to possess and that a failure to properly empathize with others is a kind of moral failure. This suggestion assumes that empathy involves caring for others’ well-being. Skeptics challenge the moral importance of empathy by arguing that empathy is neither necessary nor sufficient to care for others’ well-being. This challenge is misguided. Although some forms of empathy may not be morally important, empathy with another’s basic well-being concerns is both necessary and sufficient to care for another’s well-being, provided that one’s empathy is both cognitive and affective. I further defend the idea that empathy of this form is a moral virtue. In doing so, I address three challenges to empathy’s status as a virtue: (1) that empathy is unnecessary for being ethical, (2) that it is not useful for promoting ethical behavior, and (3) that an empathetic person can lack other traits central to being virtuous, such as being motivated by the moral good and being disposed to do virtuous things whenever appropriate opportunities arise. I argue that these challenges are mistaken.