Social anxiety and attentional biases: A top-down contribution?

Selective attention toward threatening facial expressions has been found to precipitate and maintain symptoms of social anxiety. However, the automaticity of this bias is under debate. In the present study, we aimed to test whether top-down (controlled) engagement and disengagement of attention toward threatening faces is associated with social anxiety. This was examined by testing the impact of a secondary working memory (WM) load on attentional biases. In a variation of the dot-probe task, participants’ attention was initially cued to the left or right of fixation before an upright face paired with an inverted face was presented (displaying a disgust or neutral expression), and participants responded to a subsequently presented probe. The task was performed under no-load, low-load (one-digit memory task), and high-load (six-digit memory task) conditions. Social anxiety was not found to be associated with delayed disengagement from threat. However, surprisingly, high social anxiety was associated with an engagement bias away from threat, whereas low social anxiety was associated with a bias toward threat. These results were unaffected by the WM load manipulation. This indicates that engagement with threatening facial expressions has minimal contributions from top-down mechanisms, since it is likely that orienting to facial expressions occurs relatively automatically.     

Selection or Training? A Two-Fold Test of the Validity of Job-Analytic Ratings of Trainability

Decisions to use selection devices or training are typically based on subject matter expert (SME) judgments concerning the trainability of job components, including tasks and knowledge, skills, abilities, and other characteristics (KSAOs). The studies reported here examined the validity of SME trainability judgments from two perspectives. We found that (1) different SME groups' judgments related differently to actual learning changes in KSAOs covered in a training program and (2) sources of variability thought to be unrelated to the job influenced trainability ratings. Implications for the selection of SMEs in job analysis applications intended to determine the trainability of various job components are outlined.     

Is there brief temporal buffering of successive visual inputs?

The part-report advantage has been used to identify short-lived forms of visual storage (Sperling, 1960). We adopt the part-report paradigm to test whether visual memory can preserve, for a brief time, successive inputs and their temporal order. In our experiments, two successive arrays, each of 4 digits, were presented on each trial. The two arrays were spatially coincident, and each was followed by a random pattern-mask. In the part-report conditions, an auditory cue indicated whether the participant should report the first array or the second array. The results consistently showed a part-report advantage, which ranged in size from 16% to 37%. Delaying the cue by 500?ms abolished most of this advantage, in that performance was then similar to that in whole-report conditions. Subsequent experiments confirmed that the part-report superiority we measure is not achieved by (a) making eye movements that spatially displace the second array relative to the first; (b) extracting information from a single snapshot containing an integrated representation of the targets and masks; or (c) transferring a subset of material to a phonological store. We propose instead that observers have access to a limited, rapidly decaying representation of successive visual inputs stored in temporal sequence.     

Physical Activity, Life Satisfaction, and Self-Rated Health of Middle School Students

Little research has examined the association between life satisfaction, self-rated health (SRH), and physical activity concurrently for middle school students. A convenience sample of 245 students in grades 7 and 8 was surveyed about physical activity, life satisfaction, and SRH using the U.S. Centers for Disease Control and Prevention (CDC) 2005 Middle School Youth Risk Behavior Survey. ANOVA analyses revealed significantly reduced life satisfaction for females who reported not engaging in vigorous physical activity during the past 7 days [p < .01, effect size (ES) = .75]. Significantly reduced life satisfaction was detected for both males (p < .001, ES = .66) and females (p < .0001, ES = .80) who reported not playing on sports teams. Additionally, logistic regression analyses showed the odds of reporting fair/poor SRH increased 5.4 times for males (CI = 1.30–22.39, p < .05) and 30.9 times for females (CI = 3.74–255.43, p < .001) who reported not playing on sports teams. Preliminary findings suggest physical activity and sports participation is associated with improved life satisfaction and SRH for middle school students. In addition, although some gender differences were observed, consistent findings for sports participation suggest sports participation may carry multiple social, mental, and physical benefits for youth.     

Behavioral Inhibition and Anxiety: The Moderating Roles of Inhibitory Control and Attention Shifting

Behavioral inhibition (BI), a temperament identified in early childhood, is associated with social reticence in childhood and an increased risk for anxiety problems in adolescence and adulthood. However, not all behaviorally inhibited children remain reticent or develop an anxiety disorder. One possible mechanism accounting for the variability in the developmental trajectories of BI is a child’s ability to successfully recruit cognitive processes involved in the regulation of negative reactivity. However, separate cognitive processes may differentially moderate the association between BI and later anxiety problems. The goal of the current study was to examine how two cognitive processes—attention shifting and inhibitory control—laboratory assessed at 48 months of age moderated the association between 24-month BI and anxiety symptoms in the preschool years. Results revealed that high levels of attention shifting decreased the risk for anxiety problems in children with high levels of BI, whereas high levels of inhibitory control increased this risk for anxiety symptoms. These findings suggest that different cognitive processes may influence relative levels of risk or adaptation depending upon a child’s temperamental reactivity.     

A latent variables examination of processing speed, response inhibition, and working memory during typical development

This study addressed three related aims: (a) to replicate and extend previous work regarding the nonunitary nature of processing speed, response inhibition, and working memory during development; (b) to quantify the rate at which processing speed, response inhibition, and working memory develop and the extent to which the development of these latter abilities reflect general changes in processing speed; and (c) to evaluate whether commonly used tasks of processing speed, response inhibition, and working memory are valid and reliable when used with a developmentally diverse group. To address these aims, a latent variables approach was used to analyze data from 147 participants 6-24 years of age. Results showed that processing speed, response inhibition, and working memory were separable abilities and that the extent of this separability was stable across the age range of participants. All three constructs improved as a function of age; however, only the effect of age on working memory remained significant after processing speed was controlled. The psychometric properties of tasks used to assess the constructs were age invariant, thereby validating their use in studies of executive development.