Recognition of facial emotions in neuropsychiatric disorders

Recognition of facial emotions represents an important aspect of interpersonal communication and is governed by select neural substrates. We present data on emotion recognition in healthy young adults utilizing a novel set of color photographs of evoked universal emotions. In addition, we review the recent literature on emotion recognition in psychiatric and neurologic disorders, and studies that compare different disorders.     

The relationship of perceived self-efficacy to quality of life in chronic obstructive pulmonary disease.

From a biomedical perspective, variations in the quality of life of chronic obstructive pulmonary disease (COPD) patients may be attributed to changes in pulmonary function; thus, an increase in lung function should be correlated with an increased score on a health-related quality-of-life measure. However, inconsistent results regarding correlations between various measures of pulmonary function and quality of life have been reported in the literature. The authors evaluated a social cognitive model of quality of life among persons with COPD by analyzing relationships among biomedical measures, self-efficacy measures, and quality-of-life measures in a recursive path model. Path analysis results indicated that the association of pulmonary function and symptoms with quality of life was mediated by perceived self-efficacy for functional activities.     

ROLE REVERSALS: AN ANALYSIS OF THERAPEUTIC EFFECTS ACHIEVED WITH DISRUPTIVE BOYS DURING THEIR APPOINTMENTS AS PEER MONITORS

Three 7-year-old boys with histories of negative interactions were appointed to monitor individual classmates during daily noon recess. As monitors, the boys awarded points to their classmates for playing appropriately and, on rare occasions, withdrew a point for negative interactions. The three boys immediately decreased their own rates of negative interactions during the sessions in which they were appointed as monitors. Two of the boys concomitantly increased their rates of positive interactions. Their reductions in negative interactions were not maintained during reversals and did not clearly generalize to the morning or afternoon recess periods. Subsequent appointment of the boys as peer monitors during the morning recess produced similar improvements in their behavior. Results suggest that appointment to the role of peer monitor may itself function as an intervention.     

AIDS knowledge among black drug users: an issue of reliability

This study examined the reliability of an inventory measuring AIDS-related knowledge among 553 black drug users. Data were collected from a socially high-risk community in Birmingham, Alabama. The KR-20 reliability scores were computed from the inventory for each drug-use group. The KR-20 reliabilities ranged from .39 to .57. These findings may suggest that the inconsistent reports of the predictive power of AIDS knowledge among drug users reported in previous studies might be related to the low internal consistencies of the inventory.     

Anchor Point Selection: Scale Alignment Based on an Inequality Criterion

For detecting differential item functioning (DIF) between two or more groups of test takers in the Rasch model, their item parameters need to be placed on the same scale. Typically this is done by means of choosing a set of so-called anchor items based on statistical tests or heuristics. Here the authors suggest an alternative strategy: By means of an inequality criterion from economics, the Gini Index, the item parameters are shifted to an optimal position where the item parameter estimates of the groups best overlap. Several toy examples, extensive simulation studies, and two empirical application examples are presented to illustrate the properties of the Gini Index as an anchor point selection criterion and compare its properties to those of the criterion used in the alignment approach of Asparouhov and Muthén. In particular, the authors show that—in addition to the globally optimal position for the anchor point—the criterion plot contains valuable additional information and may help discover unaccounted DIF-inducing multidimensionality. They further provide mathematical results that enable an efficient sparse grid optimization and make it feasible to extend the approach, for example, to multiple group scenarios.     

Idiosyncratic route-based memories in desert ants, Melophorus bagoti: how do they interact with path-integration vectors?

Individually foraging desert ants of central Australia, Melophorus bagoti, exhibit amazingly precise mechanisms of visual landmark guidance when navigating through cluttered environments. If trained to shuttle back and forth between the nest and a feeder, they establish habitual outbound and inbound routes, which guide them idiosyncratically across the natural maze of extended arrays of grass tussocks covering their foraging areas. The route-based memories that usually differ between outbound and inbound runs are acquired already during the first runs to the nest and feeder. If the ants are displaced sideways of their habitual routes, they can enter their stereotyped routes at any place and then follow these routes with the same accuracy as if they had started at the usual point of departure. Furthermore, the accuracy of maintaining a route does not depend on whether homebound ants have been captured at the feeder shortly before starting their home run and, hence, with their home vector still fully available (full-vector ants), or whether they have been captured at the nest after they had already completed their home run (zero-vector ants). Hence, individual landmark memories can be retrieved independently of the state of the path-integration vector with which they have been associated during the acquisition phase of learning. However, the ants display their path-integration vector when displaced from the feeder to unfamiliar territory.     

EFFECTS OF COLLATERAL PEER SUPPORTIVE BEHAVIORS WITHIN THE CLASSWIDE PEER TUTORING PROGRAM

A classwide peer tutoring procedure was implemented in an urban elementary school classroom to improve students' spelling performance. Three students combined untrained or collateral tutoring behaviors with the core behaviors initially taught. To explore the function of these natural and spontaneous behaviors, a multielement single-subject experiment with replications was conducted. Results indicated that the additional tutoring behaviors increased (a) the academic response frequencies of 3 tutees and (b) the weekly spelling achievement of 1 target tutee. The remaining class members were successfully taught and continued to use these behaviors over the final 3 weeks of the school year. These findings are discussed with regard to academic instruction, natural communities of peer reinforcement, and the social validation of intervention procedures.     

Psychosocial Impact of Tubal Ligation in Alabama Women1

The prevalence of female sterilization has grown rapidly throughout the world, especially in the United States. Yet the psychosocial impact of tubal ligation is incompletely understood. Most previous research has been retrospective and has lacked comparison groups of women using other birth control methods. This study used procedures developed in World Health Organization research to study the impact of voluntary tubal ligation on Alabama women. The design was prospective, included a comparison group, and called for 6- and 12-month follow-ups. Tubal ligation reduced follow-up pregnancy rate and scores on a measure of fear of pregnancy. Sterilization also produced a small increase in menstrual distress but did not affect sexual satisfaction or mental health nor did it increase regrets about contraceptive choice over other methods. These results imply women attained the goals that led them to choose sterilization.     

The whole moves less than the spin of its parts

When individually moving elements in the visual scene are perceptually grouped together into a coherently moving object, they can appear to slow down. In the present article, we show that the perceived speed of a particular global-motion percept is not dictated completely by the speed of the local moving elements. We investigated a stimulus that leads to bistable percepts, in which local and global motion may be perceived in an alternating fashion. Four rotating dot pairs, when arranged into a square-like configuration, may be perceived either locally, as independently rotating dot pairs, or globally, as two large squares translating along overlapping circular trajectories. Using a modified version of this stimulus, we found that the perceptually grouped squares appeared to move more slowly than the locally perceived rotating dot pairs, suggesting that perceived motion magnitude is computed following a global analysis of form. Supplemental demos related to this article can be downloaded from app.psychonomic-journals.org/content/supplemental.