The impact of cognitive deficits on conflict monitoring. Predictable dissociations between the error-related negativity and N2

Monitoring of ongoing processing plays a critical role in regulating cognitive function. Two event-related potential components, the error-related negativity (ERN) and N2, have been proposed to reflect this monitoring function. Specifically, it has been suggested that both components reflect the role of anterior cingulate cortex (ACC) in monitoring for the occurrence of response conflict. This view appears to be challenged by findings that alcohol consumption and lesions in ACC have dissociable effects on the ERN and N2. Using a computational model, the present research demonstrates that the conflict-monitoring theory can account for these dissociations in terms of the dissociable effects of alcohol and ACC lesions on processing of relevant stimulus information (which determines ERN amplitude) and processing of irrelevant, distracting information (which determines N2 amplitude). The simulation results suggest new interpretations of the cognitive deficits caused by alcohol consumption (impaired stimulus processing) and ACC lesions (impaired attentional control).     

Sexual orientation identity and romantic relationship quality in same-sex couples

Research suggests that the well-being of members of stigmatized groups is related to the ways that individuals understand, evaluate, and respond to their devalued collective identity. The present study extends this line of inquiry by investigating collective identity in the context of romantic relationship functioning, focusing on same-sex couples as a type of stigmatized relationship. In this cross-sectional study, the authors examined four identity-related variables (internalized homonegativity, stigma sensitivity, identity confusion, and identity superiority) in a sample of 274 female and 187 male same-sex couples. Results provided evidence of identity similarity between partners, particularly for internalized homonegativity and identity superiority. Each of the identity variables was associated with relationship quality, and actor effects of identity on quality were more common than partner effects. Perceived identity similarity mediated some of the links found between identity and quality and was positively associated with relationship quality regardless of actor identity.     

A temporal same-object advantage in the tunnel effect: facilitated change detection for persisting objects

Meaningful visual experience requires computations that identify objects as the same persisting individuals over time, motion, occlusion, and featural change. This article explores these computations in the tunnel effect: When an object moves behind an occluder, and then an object later emerges following a consistent trajectory, observers irresistibly perceive a persisting object, even when the pre- and postocclusion views contrast featurally. This article introduces a new change detection method for quantifying percepts of the tunnel effect. Observers had to detect color changes in displays where several objects oscillated behind occluders and occasionally changed color. Across comparisons with several types of spatiotemporal gaps, as well as manipulations of occlusion versus implosion, performance was better when objects' kinematics gave the impression of a persisting individual. The results reveal a temporal same-object advantage: better change detection across temporal scene fragments bound into the same persisting object representations. This suggests that persisting objects are the underlying units of visual memory.     

The relationship of drive for muscularity to sociocultural factors, self-esteem, physical attributes gender role, and social comparison in middle school boys

This study examines the relationship of three sociocultural factors—media influence, peer teasing, and parent teasing/comments and three potential moderator variables—self-esteem, social comparison, and endorsement of male strength and athleticism—to drive for muscularity in middle school boys. There were 287 seventh and eighth grade boys who completed a questionnaire measuring these variables as well as body mass index (BMI) and pubertal status. Results indicated that media influence and male physical attributes endorsement were particularly important correlates of drive for muscularity. These findings have implications for programs designed to prevent body dissatisfaction among adolescent boys.     

Assessing personality change in psychotherapy with the SWAP-200: a case study

Many studies document the efficacy of psychotherapy for acute syndromes such as depression, but less is known about personality change in patients treated for personality pathology. The Shedler-Westen Assessment Procedure (SWAP-200; Westen & Shedler, 1999a, 1999b) is an assessment tool that measures a broad spectrum of personality constructs and is designed to bridge the gap between the clinical and empirical traditions in personality assessment. In this article, we demonstrate the use of the SWAP-200 as a measure of change in a case study of a patient diagnosed with borderline personality disorder. We collected assessment data at the start of treatment and after 2 years of psychotherapy. The findings illustrate the personality processes targeted in intensive psychotherapy for borderline personality.     

Sex differences in the Poggendorff illusion: identifying the locus of the effect

Extensive research has identified individual differences associated with sex in a range of visual task performances, including susceptibility to visual illusions. The aim of this study was to identify the locus of sex differences within the context of the Poggendorf illusion. 79 women and 79 men participated within a mixed factorial design. Analyses indicated that sex differences were only present in the stimulus context with the full inducing element present. This finding replicates recent research and provides qualifying evidence as to the locus of the effect. The findings are discussed within the functional framework of perceptual processes involved in extrapolating 3-dimensional characteristics from 2-dimensional visual stimuli.     

Dissociations in perceptual learning revealed by adult age differences in adaptation to time-compressed speech

When presented with several time-compressed sentences, young adults' performance improves with practice. Such adaptation has not been studied in older adults. To study age-related changes in perceptual learning, the authors tested young and older adults' ability to adapt to degraded speech. First, the authors showed that older adults, when equated for starting accuracy with young adults, adapted at a rate and magnitude comparable to young adults. However, unlike young adults, older adults failed to transfer this learning to a different speech rate and did not show additional benefit when practice exceeded 20 sentences. Listeners did not adapt to speech degraded by noise, indicating that adaptation to time-compressed speech was not attributable to task familiarity. Finally, both young and older adults adapted to spectrally shifted noise-vocoded speech. The authors conclude that initial perceptual learning is comparable in young and older adults but maintenance and transfer of this learning decline with age.     

Divided attention in younger and older adults: effects of strategy and relatedness on memory performance and secondary task costs

Divided attention at encoding leads to a significant decline in memory performance, whereas divided attention during retrieval has relatively little effect; nevertheless, retrieval carries significant secondary task costs, especially for older adults. The authors further investigated the effects of divided attention in younger and older adults by using a cued-recall task and by measuring retrieval accuracy, retrieval latency, and the temporal distribution of attentional costs at encoding and retrieval. An age-related memory deficit was reduced by pair relatedness, whereas strategy instructions benefited both age groups equally. Attentional costs were greater for retrieval than for encoding, especially for older adults. These findings are interpreted in light of notions of an age-related associative deficit (M. Naveh-Benjamin, 2000) and age-related differences in the use of self-initiated activities and environmental support (F. I. M. Craik, 1983, 1986).     

Integrating the criminal justice system into mental health service delivery: the worcester diversion experience

The substantial number of persons with mental illness encountered in many sectors of the criminal justice system has spurred actors from various agencies within that system to take actions aimed at reducing the growth of this population. These actions have included the development of specialty police units, jail diversion programs, and other mechanisms for channeling persons with mental illness out of the criminal justice system and into mental health treatment. The courts, too, have become involved in this effort with the recent development of the "mental health court," the latest of the "specialty" or "problem solving courts." These courts have not been without their critics, however, nor are they the only feasible approach to court-based diversion. This paper identifies and explores a range of options for structuring the relationship between criminal courts and local mental health systems. Beginning with a discussion of the rationale motivating the development of mental health courts, two alternatives to this specialty court model are discussed. One involves judges dealing with defendants having mental illness and substance abuse on a case-by-case basis. The other takes advantages of linkages that may already exist between most courts and the mental health providers who conduct their forensic assessments, expanding the role of these providers to serve as boundary spanners between courts and the components of local mental health systems. Regardless of the model adopted, however, appropriate linkages must exist between the courts and relevant providers. A case study is provided that demonstrates how the status of a locale's linkages can be evaluated and how the information derived from such evaluation can be used to improve the linkages between police, courts, and health and human services agencies.