Visual search asymmetries in motion and optic flow fields

In visual search, items defined by a unique feature are found easily and efficiently. Search for a moving target among stationary distractors is one such efficient search. Search for a stationary target among moving distractors is markedly more difficult. In the experiments reported here, we confirm this finding and further show that searches for a stationary target within a structured flow field are more efficient than searches for stationary targets among distractors moving in random directions. The structured motion fields tested included uniform direction of motion, a radial flow field simulating observer forward motion, and a deformation flow field inconsistent with observer motion. The results using optic flow stimuli were not significantly different from the results obtained with other structured fields of distractors. The results suggest that the local properties of the flow fields rather than global optic flow properties are important for determining the efficiency of search for a stationary target.     

Body, society, and subjectivity in religious studies

Attention to bodies has transformed the study of religion in the past thirty years, aiding the effort to overcome the discipline's Protestant biases by shifting interest from beliefs to practices. And yet much of this work has unwittingly perpetuated an individualist notion of the religious subject. Although religionists are now well aware that bodies cannot be studied apart from the social forces that shape them, all too often the religious subject stands alone in a crowd, participating in communal rituals, subject to religious authorities and disciplinary practices, but oddly detached from intimate relationships. In this article, I first argue that the turn to the body was motivated by what it appeared to reject: theoretical questions about subjectivity. I then seek to challenge prevailing trends by arguing that these same theoretical insights should now prod us to attend to the import of intimacy and personal relationships.     

Expanding stress generation theory: test of a transdiagnostic model

Originally formulated to understand the recurrence of depressive disorders, the stress generation hypothesis has recently been applied in research on anxiety and externalizing disorders. Results from these investigations, in combination with findings of extensive comorbidity between depression and other mental disorders, suggest the need for an expansion of stress generation models to include the stress generating effects of transdiagnostic pathology as well as those of specific syndromes. Employing latent variable modeling techniques to parse the general and specific elements of commonly co-occurring Axis I syndromes, the current study examined the associations of transdiagnostic internalizing and externalizing dimensions with stressful life events over time. Analyses revealed that, after adjusting for the covariation between the dimensions, internalizing was a significant predictor of interpersonal dependent stress, whereas externalizing was a significant predictor of noninterpersonal dependent stress. Neither latent dimension was associated with the occurrence of independent, or fateful, stressful life events. At the syndrome level, once variance due to the internalizing factor was partialed out, unipolar depression contributed incrementally to the generation of interpersonal dependent stress. In contrast, the presence of panic disorder produced a "stress inhibition" effect, predicting reduced exposure to interpersonal dependent stress. Additionally, dysthymia was associated with an excess of noninterpersonal dependent stress. The latent variable modeling framework used here is discussed in terms of its potential as an integrative model for stress generation research.     

Elevated Appraisals of the Negative Impact of Naturally Occurring Life Events: A Risk Factor for Depressive and Anxiety Disorders

The tendency to appraise naturally occurring life events (LEs) as having high negative impact may be a predisposing factor for the development of depression and anxiety disorders. In the current study, appraisals of the negative impact of recent LEs were examined in relationship to depressive and anxiety disorders in a sample of 653 adolescents who were administered diagnostic and life stress interviews at ages 15 and 20. Participants’ appraisals of the negative impact of LEs reported at age 15 were statistically adjusted using investigator-based ratings to control for objective differences across LEs. Higher appraisals of the negative impact of LEs were associated with both past and current depressive and anxiety disorders at age 15 and predicted subsequent first onsets of depressive and anxiety disorders occurring between ages 15 and 20. In addition, appraisals of the negative impact of LEs were particularly elevated among those experiencing both a depressive and anxiety disorder over the course of the study. The findings suggest that systematically elevated appraisals of the negative impact of LEs are a predisposing factor for depression and anxiety disorders and may represent a specific risk factor for co-morbid depression and anxiety in mid-adolescence and early adulthood.     

The Medical Humanities and the Perils of Curricular Integration

The advent of integration as a feature of contemporary medical curricula can be seen as an advantage for the medical humanities in that it provides a clear implementation strategy for the inclusion of medical humanities content and/or perspectives, while also making its relevance to medical education more apparent. This paper discusses an example of integration of humanities content into a graduate medical course, raises questions about the desirability of an exclusively integrated approach, and argues for the value of retaining a discrete and coherent disciplinary presence for the medical humanities in medical curricula.     

Further Experience with the Practice Integration Profile: A Measure of Behavioral Health and Primary Care Integration

Valid measures of behavioral health integration have the potential to enable comparisons of various models of integration, contribute to the overall development of high-quality care, and evaluate outcomes that are strategically aligned with standard improvement efforts. The Practice Integration Profile has proven to discriminate among clinic types and integration efforts. We continued the validation of the measure’s internal consistency, intra-rater consistency, and inter-rater consistency with a separate and larger sample from a broader array of practices. We found that the Practice Integration Profile demonstrated a high level of internal consistency, suggesting empirically sound measurement of independent attributes of integration, and high reliability over time. The Practice Integration Profile provides internally consistent and interpretable results and can serve as both a quality improvement and health services research tool.

     

Predictors of complicated grief

Abstract

This study examined whether process variables predict an outcome of complicated grief. A turbulent and prolonged grief was predicted to occur after the death of a spouse in subjects who had self-blame, used the deceased for an extension of self, had ambivalence toward the deceased, or overcontrolled emotional responses. Ninety subjects were examined at 6, 14, and 25 months after the loss via a self-report battery of process variables and a structured clinical interview designed to assess symptoms. Subjects with complicated grief were compared with those with normative grief. Predictions were supported only in tertiary data analyses; they were not supported well in the primary and secondary statistical analyses. The authors concluded that either self-reports of process variables are inadequate measures or the theory that led to these measures and predictions is in need of revision.     

Conceptualizing,Capturing, and Modeling Change: Challenges for Psychology

A primary goal of scientists, be they psychologists or physicists, is the detection of cause‐and‐effect relationships. In whatever field of study, the impact of the independent variable upon the dependent variable is assessed either indirectly through presumed change (comparing groups cross‐sectionally) or directly through observed change (comparing a single entity or groups of entities longitudinally). Researchers' conceptualization of change varies quite dramatically, even within the field of psychology, with attendant variation in research designs and statistics commonly employed. We discuss the array of options available to conceptualize, capture, and model change, including their strengths and weaknesses, using examples from our own research in personality lifespan development, along with others' related research.