Individual differences in working memory within a nomological network of cognitive and perceptual speed abilities

It has become fashionable to equate constructs of working memory (WM) and general intelligence (g). Few investigations have provided direct evidence that WM and g measures yield similar ordering of individuals. Correlational investigations have yielded mixed results. The authors assess the construct space for WM and g and demonstrate that WM shares substantial variance with perceptual speed (PS) constructs. Thirty-six ability tests representing verbal, numerical, spatial, and PS abilities; the Raven Advanced Progressive Matrices; and 7 WM tests were administered to 135 adults. A nomological representation for WM is provided through a series of cognitive and PS ability models. Construct overlap between PS and WM is further investigated with attention to complexity, processing differences, and practice effects.     

Glowing Praise and the Envious Gaze: Social Dilemmas Surrounding the Public Recognition of Achievement

To determine whether well-intentioned attempts to recognize superior achievement might backfire, these studies drew on recent advances to social comparison theory that emphasize interpersonal costs of outperformance (e.g., Exline & Lobel, 1999b). Undergraduates (N = 122) were asked how top performance on exams should be recognized (Study 1). Students strongly preferred private, anonymous forms of recognition to more public forms of recognition. Study 2 suggested that preferences for recognition reflect sensitivity to both positive and negative peer responses. Study 2 also revealed individual differences in preferences for recognition. Narcissism was positively associated with desire for public recognition and negatively associated with concern about being the target of peer hostility. Competitiveness was associated with beliefs that being recognized for superior achievement would bring hostile reactions from peers. Sociotropy was associated with high levels of concern about both negative and positive peer reactions to public recognition. These findings complement prior research suggesting that public recognition, although self-enhancing, may create social dilemmas. Theoretical and practical implications are discussed.     

Sex differences in childhood sexual abuse and suicide-related behaviors

Child sexual abuse and suicide-related behaviors are associated, but it remains unclear if the strength of this association differs in boys and girls. In a systematic review of this association in children and youth, we identified 16 relevant studies, all cross-sectional surveys of students. The association is stronger in boys specific to suicide attempt(s). Adjustments for potential confounding variables explained some, but not all of this sex difference. While additional research would strengthen causal inferences, this sex difference may be influenced by the nature and timing of child sexual abuse as well as the sex of the perpetrator, which in turn shapes the disclosure of these events.     

Hemispheric asymmetry,early visual processes,and serial memory comparison

Observers indicated whether a single probe letter presented to the left visual field/right hemisphere (LVF-RH) or to the right visual field/left hemisphere (RVF-LH) matched one of two, three, four, or five set letters in both name and case. For positive trials during the initial experimental session, the slope of the linear memory set size reaction time function was increased by perceptually degrading the probe letter on LVF-RH trials, but not on RVF-LH trials. In addition, perceptual degradation of the probe letter increased the intercept of the memory set size function more on RVF-LH trials than on LVF-RH trials. During subsequent experimental sessions, the same pattern of intercept results was obtained but perceptual degradation of the probe no longer changed the slope for either LVF-RH or RVF-LH trials. However, the slopes were uniformly lower on RVF-LH trials than on LVF-RH trials. The major results are consistent with hypothesized right-hemisphere efficiency for early processing stages and left-hemisphere efficiency for serial processing of alphanumeric information. The results further illustrate the importance of separating stages of processing in studies of cerebral laterality and indicate that the relative difficulty of the various stages can be a determinant of laterality results.     

Transparency and reflection

ABSTRACT

Much recent work on self-knowledge has been inspired by the idea that the ‘transparency’ of questions about our own mental states to questions about the non-mental world holds the key to understanding how privileged self-knowledge is possible. I critically discuss some prominent recent accounts of such transparency, and argue for a Sartrean interpretation of the phenomenon, on which this knowledge is explained by our capacity to transform an implicit or ‘non-positional’ self-awareness into reflective, ‘positional’ self-knowledge.