Home environment and cognitive development of black infants in impoverished South African families

This study examined the interrelationships between home environment, mental and psychomotor development, growth, and educational and occupational indices of socioeconomic status among an urban sample of 305 African infants aged 2 to 30 months. The infants were assessed on the Bayley Scales of Infant Development and the Home Screening Questionnaire, and their heights and weights were recorded. Information regarding the family's socioeconomic status was obtained during interviews with caretakers. No significant relationships were found between parental education and occupation and infant cognitive development, but quality of the home environment was positively correlated with these indices of parental socioeconomic status. On the other hand, home environment scores were found to be significantly related to mental development, independent of parental education and occupation. There was considerable variation in home environments in the sample, which was drawn from generally impoverished urban communities. These findings from an African cultural group support the generalizability of the importance of the quality of the home environment for infant development.     

Wittgensteinian Foundationalism

The idea that there is such a thing as Wittgensteinian foundationalism is a provocative one for two reasons. For one thing, Wittgenstein is widely regarded as an anti-foundationalist. For another, the very word `foundationalism' sounds like the name of a theory, and Wittgenstein famously opposed the advancing of theories and theses in philosophy. Nonetheless, in his book Moore and Wittgenstein on Certainty, Avrum Stroll has argued that Wittgenstein does indeed develop a foundationalist view in his final work, On Certainty. On this basis, Stroll goes on to argue against a number of contemporary views, including forms of relativism and scientism. In what follows I will examine what Stroll calls Wittgenstein's foundationalism (in Section 1) and argue that Stroll's reading of Wittgenstein, though original and interesting, is misguided in important ways and so cannot be used against the views he opposes (in Section 2). Finally, in Section 3, I offer a brief summary of the reading of Wittgenstein that I recommend.     

IMPROVING CLASSROOM BEHAVIOR IN MENTALLY RETARDED CHILDREN THROUGH CORRESPONDENCE TRAINING

Except for a few studies, most research investigating correspondence training procedures has been more analogue in nature. The purpose of the present set of studies was to examine whether a “say-do” correspondence training technique could be used with children in special education classes to improve classroom behavior. The specific behaviors targeted for change included: out-of-seat behavior (Experiment 1), sitting posture (Experiment 2), and on-task behavior (Experiment 3). The say-do procedure used in Experiment 1 resembled that of previous studies, whereas that in Experiment 2 was more elaborate in the specificity of verbal statements required from the children and the feedback given them. The training procedure in Experiment 3 used a format similar to the say-do approach, but stressed visual rather than verbal cuing because it was used with nonverbal children. All three studies used single-subject designs and examined maintenance and/or generalization questions. Experiments 2 and 3 also evaluated whether concomitant changes in performance on academic tasks occurred. The results of the three studies provide strong evidence that correspondence training can be effectively used with educationally handicapped children. Moreover, the successful modification of the “say-do” to a “show-do” procedure in Experiment 3 points out the flexibility of the correspondence training approach.     

Effects of body mass index and education on verbal and nonverbal memory

We previously reported that higher education protects against executive dysfunction related to higher body mass index (BMI) in younger, but not older, adults. We now extend the previous analyses to verbal and nonverbal memory. Fifty-nine healthy, dementia-free community-dwelling adults ranging in age from 18 to 81 years completed the Hopkins Verbal Learning Test – Revised (HVLT-R) and the Brief Visuospatial Memory Test – Revised (BVMT-R). Self-reported years of education served as a proxy for cognitive reserve. We found that more highly educated individuals maintained their BVMT-R immediate recall performance across the range of BMI, but in less educated individuals, higher BMI was associated with worse performance. Our findings suggest that education may play a protective role against BMI-related nonverbal learning deficits, similar to previous reports for verbal memory and executive functioning. Results highlight the importance of considering educational background when determining the risk for BMI-related cognitive impairment in clinical settings.     

Creative at Each Age: Age‐Related Differences in Drivers of Workplace Creativity from an Experience Sampling Study

Creativity and innovation are essential agents for change processes and accelerating technical development. Having to face challenges, such as demographic change, organizations require individuals who are creative and innovative at each age. Previous research identified affect as a crucial determinant of creativity, even though empirical findings showed inconsistencies. Drawing on literature on age‐related changes in affective experiences, we investigated the moderating effect of employees’ age on the association between daily positive and negative affect and creativity using a daily diary study. A total of 116 employees responded to daily questionnaires twice a day over five consecutive working days. As expected, hierarchical linear modeling analyses revealed differential effects regarding the affect‐creativity association, dependent on employees’ age. Although older employees were most creative on days when they experienced a high level of positive affect (compared to their mean level of positive affect), younger employees were particularly creative when experiencing negative affect (compared to their mean level of negative affect). We discuss practical implications on how organizations could provide creativity‐enhancing work environments for employees at each age.     

Psychopathy in a forensic sample – the factor structure of the PCL:SV in a Danish forensic sample

The research literature reveals an ongoing debate regarding the most appropriate conceptualization of psychopathic personality disorder. Specifically, it is discussed to what degree antisocial behavior is part of the conceptualization of the psychopathy construct and what constitutes the best factor model of the Psychopathy Checklist scales. The aim of the present study is to consider the underlying factor structure of the PCL:SV (Psychopathy Checklist Screening Version) in a Danish sample as well as considering the role of antisocial behavior in the psychopathy construct. Data from a Danish forensic patient sample (N = 225) was used and item response theory (IRT), aonfirmatory factor analyses (CFA) and structural equations model (SEM) analyses were carried out. Overall, the findings suggest appropriate item and model fit for the PCL:SV as well as superiority of the three‐factor model over the four‐factor model. The results are discussed in relation to the broader concept of personality disorder as well as clinical practice in regards to violence risk assessments and treatment of psychopathy.