Feature integration theory revisited: Dissociating feature detection and attentional guidance in visual search.

In feature integration theory (FIT; A. Treisman & S. Sato, 1990), feature detection is driven by independent dimensional modules, and other searches are driven by a master map of locations that integrates dimensional information into salience signals. Although recent theoretical models have largely abandoned this distinction, some observed results are difficult to explain in its absence. The present study measured dimension-specific performance during detection and localization, tasks that require operation of dimensional modules and the master map, respectively. Results showed a dissociation between tasks in terms of both dimension-switching costs and cross-dimension attentional capture, reflecting a dimension-specific nature for detection tasks and a dimension-general nature for localization tasks. In a feature-discrimination task, results precluded an explanation based on response mode. These results are interpreted to support FIT's postulation that different mechanisms are involved in parallel and focal attention searches. This indicates that the FIT architecture should be adopted to explain the current results and that a variety of visual attention findings can be addressed within this framework. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Eye Gaze and Individual Differences Consistent With Learned Attention in Associative Blocking and Highlighting.

The associative learning effects called blocking and highlighting have previously been explained by covert learned attention, but evidence for learned attention has been indirect, via models of response choice. The present research reports results from eye tracking consistent with the attentional hypothesis: Gaze duration is diminished for blocked cues and augmented for highlighted cues. If degree of attentional learning varies across individuals but is relatively stable within individuals, then the magnitude of blocking and highlighting should covary across individuals. This predicted correlation is obtained for both choice and eye gaze. A connectionist model that implements attentional learning is shown to fit the data and account for individual differences by variation in its attentional parameters. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differences in receipt of rehabilitation by impaired midlife men and women.

This analysis used data from the 1978 Survey of Disability and Work to assess gender differences in the receipt of rehabilitation services. The findings point to a continuing puzzle: Approximately equal proportions of impaired men and women received rehabilitation services; yet even when age, work history, severity of impairment, and receipt of disability insurance or workers' compensation were controlled for, a larger proportion of men than women were in the labor force after rehabilitation. Men were more likely than women to receive employment-related rehabilitation services. Furthermore, prediction of the receipt of rehabilitation services was poorer for women than for men. Variables hypothesized to predict receipt of rehabilitation were significant predictors for men, but not for women (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of Task Relevance and Stimulus-Driven Salience in Feature-Search Mode.

Attentional allocation in feature-search mode (W. F. Bacon & H. E. Egeth, 1994) is thought to be solely determined by top-down factors, with no role for stimulus-driven salience. The authors reassessed this conclusion using variants of the spatial cuing and rapid serial visual presentation paradigms developed by C. L. Folk and colleagues (C. L. Folk, R. W. Remington, & J. C. Johnston, 1992; C. L. Folk, A. B. Leber, & H. E. Egeth, 2002). They found that (a) a nonsingleton distractor that possesses the target feature produces attentional capture, (b) such capture is modulated by bottom-up salience, and (c) resistance to capture by irrelevant singletons is mediated by inhibitory processes. These results extend the role of top-down factors in search for a nonsingleton target while arguing against the notion that effects of bottom-up salience and top-down factors on attentional priority are strictly encapsulated within distinct search modes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Tripartite dimensions of emotion in a child clinical sample: Measurement strategies and implications for clinical utility.

Several measurement strategies to assess the tripartite model of emotion in child and adolescent samples have been developed. However, no studies have comparatively examined the most suitable strategies in clinical samples of children and adolescents. This study involved the evaluation of 2 distinct measures of tripartite constructs relative to anxiety and depression criterion variables in a clinical sample of 226 children in Grades 1 through 12. Results indicated that the measures performed similarly overall, but some differences were pronounced enough to suggest that the measures indexed slightly different aspects of the same constructs. These differences appear consistent with the scale design of each instrument. Implications for measurement of these constructs in future research are highlighted. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Processes by Which Perceived Autonomy Support in Physical Education Promotes Leisure-Time Physical Activity Intentions and Behavior: A Trans-Contextual Model.

The trans-contextual model proposes that young people's perceived autonomy support in physical education will affect their perceived locus of causality, intentions, and physical activity behavior in leisure time. High school students completed measures of perceived autonomy support and perceived locus of causality in physical education. One week later, participants' perceived locus of causality and constructs from the theory of planned behavior were assessed in leisure time. Leisure-time physical activity behavior was measured 5 weeks later. Perceived autonomy support in physical education affected leisure-time physical activity directly and indirectly through a motivational sequence involving internal perceived locus of causality, attitudes, perceived behavioral control, and intentions. Results support the trans-contextual model indicating that perceived autonomy support in an educational context influences motivation in a leisure-time context. (PsycINFO Database Record (c) 2010 APA, all rights reserved)