Retrospective cues based on object features improve visual working memory performance in older adults

Research with younger adults has shown that retrospective cues can be used to orient top-down attention toward relevant items in working memory. We examined whether older adults could take advantage of these cues to improve memory performance. Younger and older adults were presented with visual arrays of five colored shapes; during maintenance, participants were presented either with an informative cue based on an object feature (here, object shape or color) that would be probed, or with an uninformative, neutral cue. Although older adults were less accurate overall, both age groups benefited from the presentation of an informative, feature-based cue relative to a neutral cue. Surprisingly, we also observed differences in the effectiveness of shape versus color cues and their effects upon post-cue memory load. These results suggest that older adults can use top-down attention to remove irrelevant items from visual working memory, provided that task-relevant features function as cues.     

A Meta-Analysis of the Reliability of Free and For-Pay Big Five Scales

The present study meta-analytically compared coefficient alpha reliabilities reported for free and for-pay Big Five scales. We collected 288 studies from five previous meta-analyses of Big Five traits and harvested 1,317 alphas from these studies. We found that free and for-pay scales measuring Big Five traits possessed comparable reliabilities. However, after we controlled for the numbers of items in the scales with the Spearman-Brown formula, we found that free scales possessed significantly higher alpha coefficients than for-pay scales for each of the Big Five traits. Thus, the study offers initial evidence that Big Five scales that are free more efficiently measure these traits for research purposes than do for-pay scales.     

Exploring Relationships Between Negative Cognitions and Anxiety Symptoms in Youth With Autism Spectrum Disorder

Although cognitions are central to the conceptualization and treatment of anxiety in typically developing (TD) youth, there is scant research investigating automatic thoughts and their relationship with anxiety in youth with autism spectrum disorder (ASD). We sought to examine the types of automatic thoughts experienced by youth with ASD and co-occurring anxiety as well as the predictive relationship of anxiety to different types of automatic thoughts in 97 children, ages 8-14 years. We also explored the relationship of automatic thoughts and intolerance of uncertainty. Consistent with prior data, there was a strong relationship between anxiety and automatic thoughts pertaining to social and physical threat. Anxiety and IU were independently associated with thoughts pertaining to personal failure which raises the hypothesis that personal failure may serve as a common pathway between anxiety, IU, and depression in ASD youth. These findings highlight the importance of assessing and treating negative cognitions in youth with ASD and anxiety.     

Sports Media Representations of Concussions in the National Rugby League

Objective

Concussion is poorly understood by the general public who are regularly exposed to this type of injury via televised sports such as the National Rugby League (NRL). This study investigated media representations of concussion by examining the terminology used by the commentators during the 2010 and 2011 NRL seasons.

Method

Data was obtained through a surveillance design where commentary statements were recorded for each observable concussion.

Results

Dramatic terminology was the most frequently used followed by entertaining and humorous terminology. Commentators often portrayed the way the incident had occurred and the player's reaction to being concussed. However, information about a player sustaining an injury that required medical attention was rarely conveyed.

Conclusion

Media tend to trivialise concussion and this may have an impact on the public's knowledge of, and influence their response to, concussion.     

The Effect of Other-Oriented Values on Decision Making: A Test of Propositions of a Theory of Concern for Others in Organizations

Based on recent theoretical work by Simon (1990, 1993), we proposed that the value of concern for others would reflect a general process whereby individuals place less value on personal outcomes and are less disposed to engage in rational calculations involving costs and benefits. We conducted two studies to examine whether these mechanisms generalize to situations that do not involve helping others. In the first study, persons high in concern for others were less attracted to choices involving the prospect of personal gain and were less discerning about the value and risk involved in making choices than were individuals low in concern for others. The second study showed that positive affective arousal, which is likely to focus attention on personal concerns, moderated the effects observed in the first study. Results suggest that other-oriented values such as concern for others may have a substantial impact on a wide range of organizational processes beyond helping.     

Logical structuralism and Benacerraf’s problem

There are two general questions which many views in the philosophy of mathematics can be seen as addressing: what are mathematical objects, and how do we have knowledge of them? Naturally, the answers given to these questions are linked, since whatever account we give of how we have knowledge of mathematical objects surely has to take into account what sorts of things we claim they are; conversely, whatever account we give of the nature of mathematical objects must be accompanied by a corresponding account of how it is that we acquire knowledge of those objects. The connection between these problems results in what is often called “Benacerraf’s Problem”, which is a dilemma that many philosophical views about mathematical objects face. It will be my goal here to present a view, attributed to Richard Dedekind, which approaches the initial questions in a different way than many other philosophical views do, and in doing so, avoids the dilemma given by Benacerraf’s problem.     

Attention to faces modulates early face processing during low but not high face discriminability

In the present study, we investigated whether attention to faces results in sensory gain modulation. Participants were cued to attend either to faces or to scenes in superimposed face—scene images for which face discriminability was manipulated parametrically. The face-sensitive N170 event-related potential component was used as a measure of early face processing. Attention to faces modulated N170 amplitude, but only when faces were not highly discriminable. Additionally, directing attention to faces modulated later processing (~230—300 msec) for all discriminability levels. These results demonstrate that attention to faces can modulate perceptual processing of faces at multiple stages of processing, including early sensory levels. Critically, the early attentional benefit is present only when the “face signal” (i.e., the perceptual quality of the face) in the environment is suboptimal.     

Dynamic epistemic logic with branching temporal structures

van Bentham et al. (Merging frameworks for interaction: DEL and ETL, 2007) provides a framework for generating the models of Epistemic Temporal Logic (ETL: Fagin et al., Reasoning about knowledge, 1995; Parikh and Ramanujam, Journal of Logic, Language, and Information, 2003) from the models of Dynamic Epistemic Logic (DEL: Baltag et al., in: Gilboa (ed.) Tark 1998, 1998; Gerbrandy, Bisimulations on Planet Kripke, 1999). We consider the logic TDEL on the merged semantic framework, and its extension with the labeled past-operator “P _ϵ” (“The event ϵ has happened before which. . .”). To axiomatize the extension, we introduce a method for transforming a given model into a normal form in a suitable sense. These logics suggest further applications of DEL in the theory of agency, the theory of learning, etc.     

Five Years, Twelve Steps, and REBT in the Treatment of Dual Diagnosis

A five-year NIDA-funded grant is described that compared client-centered 12-step-oriented and REBT/SMART Recovery-oriented intensive outpatient treatment/partial hospitalization programs with severely impaired clients with dual diagnosis (serious mental illness/substance abuse). Results are presented and suggestions made for applying the findings.