Why size counts: children's spatial reorientation in large and small enclosures

When mobile organisms are spatially disoriented, for instance by rapid repetitive movement, they must re-establish orientation. Past research has shown that the geometry of enclosing spaces is consistently used for reorientation by a wide variety of species, but that non-geometric features are not always used. Based on these findings, some investigators have postulated a species-universal 'geometric module' that is transcended by the acquisition of spatial language at 6 years. This conclusion has been challenged, however, by findings that children as young as 18 months actually do use features to reorient in larger enclosures than those used in the original experiments. The reason for the room size effect is explored here in five experiments. Collectively, the data on age at which features are first used point to the importance of both restriction of movement in the small space and the fact that features are closer in the small space. In addition, success is seen at younger ages when the target object is adjacent to the feature. These results favor an adaptive combination model of spatial reorientation over a 'module-plus-language' view.     

The rainbow of emotions: at the crossroads of neurobiology and phenomenology

Continental Philosophy Review - This contribution seeks to explicitly articulate two directions of a continuous phenomenal field: (1) the genesis of intersubjectivity in its bodily basis (both...     

The challenge of religious pluralism: A reply to James Kraft

Religious pluralis does have, as James Kraft says, a negative impact on the epistemic confidence with which one holds a religious position, when epistemology is thought on both the externalist and internalist lines. I also conclude both that there is a resulting epistemic humility and that a tolerance of religious diversity results from it, but I reach these conclusions for entirely different reasons. Epistemic humility and religious tolerance are fostered by the realization that many religions are striving for the infinite, though all have limited views of it.     

Deconstructing executive deficits among persons with autism: implications for cognitive neuroscience

Individuals with autism demonstrate impairments on measures of executive function (EF) relative to typically developing comparison participants. EF is comprised of several processes including inhibition, working memory and set shifting that develop throughout the lifespan. Impairments in EF may appear early in development and persist, or may represent a more transient delay which resolves with time. Given the unevenness of the cognitive profile of persons with autism, understanding the development of EF poses methodological challenges. These issues include those related to matching measures and the choice of comparison participants to which the performance of persons with autism will be compared. In the current review, we attempt to break down the processes of inhibition, working memory and set shifting among persons with autism. We propose to do this within a developmental perspective that highlights how matching measures and comparison participants can affect the interpretation of research findings.     

Costs in searching for two targets: dividing search across target types could improve airport security screening

The cost of searching for two visual targets simultaneously was compared against two separate single‐target searches using exposure time and accuracy measures within a staircase procedure. Dual‐target search for all stimuli (colour, shape and orientation) exhibited a loss of accuracy for one target. For orientation and shape, this dual‐target cost in accuracy was extreme, with chance‐level performance on one target. For colour, dual‐target search exhibited an additional cost in search time, with search requiring a longer exposure than the summed time required for two single‐target searches. An additional search‐time cost was also found for orientation targets when irrelevant colour variation was added to the display. In conclusion, dual‐target search for dissimilar targets is accompanied by an accuracy cost. Furthermore, colour variation, whether task‐relevant or not, leads to an additional cost in processing speed. The results suggest that a divided‐effort strategy would improve performance in search tasks such as X‐ray baggage screening. Copyright © 2006 John Wiley & Sons, Ltd.     

Simple arithmetic processing: surface form effects in a priming task

Models of numerical processing vary on whether they assume common or separate processing pathways for problems represented in different surface forms. The present study employed a priming procedure, with target naming task, in an investigation of surface form effects in simple addition and multiplication operations. Participants were presented with Arabic digit and number word problems in one of three prime-target relationships, including congruent (e.g., '2+3' and '5'), incongruent (e.g., '9+7' and '5') and neutral (e.g., 'X+Y' and '5') conditions. The results revealed significant facilitatory effects in response to congruent digit stimuli at SOAs of 300 and 1000ms, in both operations. In contrast, inhibitory effects were observed in response to incongruent word stimuli in both the addition and multiplication operations at 300ms, and in the addition operation at 1000ms. The overall priming effects observed in the digit condition were significantly greater than in the word condition at 1000ms in the multiplication operation and at 300ms in the addition operation. The results provide support to separate pathway accounts of simple arithmetic processing for problems represented in different surface forms. An explanation for variation in processing due to differences in access to visual and phonological representations is provided.     

The psychosocial impact of Hurricane Katrina: contextual differences in psychological symptoms, social support, and discrimination

This study tested a contextual model of disaster reaction by examining regional differences in the psychosocial impact of Hurricane Katrina. A total of 386 individuals participated in this study. All were recruited in the primary areas affected by Hurricane Katrina and included residents of metropolitan New Orleans (Orleans Parish, Louisiana), Greater New Orleans (i.e., Metairie, Kenner, Gretna), and the Mississippi Gulf Coast (i.e., cities along the coast from Waveland to Ocean Springs, Mississippi). Participants were assessed for posttraumatic stress disorder (PTSD) symptoms, other psychological symptoms, perceptions of discrimination, perceptions of social support, evacuation distance, and the extent to which they experienced hurricane-related stressful events. Results were consistent with previous research on the impact of disasters on mental health symptoms. Findings extended research on individual differences in the response to trauma and indicated that regional context predicted unique variance in the experience of discrimination, social support, and emotional symptoms consistent with the theoretical model presented.     

What dot clusters and bar graphs reveal: subitizing is fast counting and subtraction

In two studies, we found that dot enumeration tasks resulted in shallow-sloped response time (RT) functions for displays of 1-4 dots and steep-sloped functions for displays of 5-8 dots, replicating results implicating subitizing and counting processes for low and high ranges of dots, respectively. Extracting number from a specific type of bar graph within the same numerical range produced a shallow-sloped but scallop-shaped RT function. Factor analysis confirmed two independent subranges for dots, but all bar graph values defined a unitary factor. Significantly, factor scores and asymmetries both showed correlations of bar graph recognition to dot subitizing but not to dot counting, strongly suggesting that subitizing was used in both enumeration of low numbers of dots and bar graph recognition. According to these results, subitizing appears to be a nonverbal process operating flexibly in either additive or subtractive fashion on analog quantities having spatial extent, a conclusion consistent with a fast-counting model of subitizing but not with other models of the subitizing process.     

Ministers’ Perceptions of Depression: A Model to Understand and Improve Care

While depression is a significant worldwide health problem, fewer than half of individuals seek care. Faith-based communities may play an important role in improving the knowledge of and linkage to depression care. Focus groups of Caucasian and African-American clergy were conducted to explore these issues. Using a grounded theory approach five themes emerged, including explanatory models of depression, barriers and facilitators to care, and recommendations for involving religious communities. A model of depression care pathways was constructed that integrates secular and spiritual approaches. The findings highlight the need for targeted interventions to build trust between clergy and mental health professionals. Teresa L. Kramer, Ph.D., is Chief Psychologist and Associate Professor of Psychiatry in the College of Medicine, University of Arkansas for Medical Sciences in Little Rock. She has conducted research in child, adolescent and adult mental health assessment, outcomes, and quality of care. Her current research on adolescent depression is funded through a Research Career Development Award from the National Institute of Mental Health. She is currently developing faith-based programs to educate ministers and their congregations about depression-related illness. Dean Blevins, Ph.D., teaches in the Department of Psychiatry, College of Medicine, at the university and is associated with the Center for Mental Health & Outcomes Research, Central Arkansas Veterans Healthcare System, and the South Central Mental Illness, Research, and Clinical Center in Little Rock. Terri L. Miller, Ph.D., also teaches in the Department of Psychiatry. Martha Phillips, Ph.D., is at the Department of Human Services in Little Rock. Vanessa Davis and Billy Burris are employed at the Division of Behavioral Health Services, also in Little Rock.     

Religiousness, Health, and Health Behavior in Public-Use Data of the National Center for Health Statistics

Studies of religiousness and health-related variables in large, population-based cross-sectional or, preferably, longitudinal studies, which are often prohibitively expensive, are important to complement findings from the more commonly performed studies. Inadequately known among social science researchers, the national health surveys of the Centers for Disease Control and Prevention’s National Center for Health Statistics (NCHS) offer large, high-quality data sets to the public at no or nominal cost and hence offer important opportunities for research in the area of religion and health, religion and reproductive behavior, sociology of religion and psychology of religion. This report provides an overview of the data sets and a bibliography of prior research using these data, which is intended to suggest how the data of NCHS may be further exploited by researchers of religiousness and health.