Finger flexor motor control patterns during active flexion: an in vivo tendon force study

An in vivo tendon force measurement system was used to evaluate index finger flexor motor control patterns during active finger flexion. During open carpal tunnel release surgery (N=12) the flexor digitorum profundus (FDP) and flexor digitorum superficilias (FDS) tendons were instrumented with buckle force transducers and participants performed finger flexion at two different wrist angles (0 degrees or 30 degrees ). During finger flexion, there was concurrent change of metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joint angles, but the FDP and FDS tendon force changes were not concurrent. For the FDS tendon, no consistent changes in force were observed across participants at either wrist angle. For the FDP tendon, there were two force patterns. With the wrist in a neutral posture, the movement was initiated without force from the finger flexors, and further flexion (after the first 0.5s) was carried out with force from the FDP. With the wrist in a flexed posture, the motion was generally both initiated and continued using FDP force. At some wrist postures, finger flexion was initiated by passive forces which were replaced by FDP force to complete the motion.     

Crisis Assessment and Psychiatric Hospitalization of Children and Adolescents in State Custody

We investigated the clinical characteristics and placement decisions among a group of children who were wards of the state and had been evaluated for a crisis assessment. The sample consisted of 383 children and adolescents (ages 2-20 years) who were wards of the Illinois Department of Children and Family Services (DCFS). This study retrospectively reviewed the symptoms, risk factors, functioning and co-morbid variables, and placement or system characteristics of these children using a structured assessment tool, the Childhood Severity of Psychiatric Illness (CSPI). Results indicated that risk behaviors as rated on the CSPI, including suicidality, dangerousness, and runaway tendency, were significant predictors of psychiatric hospitalization. The importance of more widespread usage of standardized assessment tools in evaluating children's mental health needs is discussed.     

Accused for Involvement in Collective Violence: The Discursive Reconstruction of Agency and Identity by Perpetrators of International Crimes

This study explores discourses about involvement in violent intergroup conflict and international crimes from the perspective of perpetrators. Through a critical discourse analysis of 12 personal interviews carried out with individuals accused by the International Criminal Tribunal for the Former Yugoslavia (ICTY) for crimes committed during the Yugoslav conflicts, we uncover how their discourse reveals conceptions of lacking agency and powerlessness during the conflict, how it reconstructs power relationships within and between ethnic groups, and how it reflects identity management strategies destined to elude blame and responsibility. Our findings demonstrate how discourses are tainted by the legitimizing framework in which the conflict unfolded but also how they are shaped by the particular context of the communicative situation. Findings are discussed in terms of their significance for international criminal justice and its stated objectives.     

Neuropsychological and neurophysiological effects of strengthening exercise for early dementia: a pilot study

Research demonstrates a positive effect of aerobic exercise on cognitive functioning in older adults. Unfortunately, aerobic exercise is often contraindicated for older adults due to cardiovascular and functional limitations. Low-intensity strengthening exercise may offer a practical alternative, but the neuropsychological benefits and potential neurophysiological mechanisms are less well understood. The current study evaluated the effects of a 10-week strengthening exercise intervention on cognitive functioning and EEG in a sample of 13 older adults with early dementia, and 9 normative controls. Results revealed beneficial effects of strengthening exercise on verbal memory coupled with frontal beta and delta power asymmetries and N200 amplitude asymmetry. Results point to increased cognitive efficiency following 10 weeks of strengthening exercise. The findings suggest it is feasible to conduct a strengthening intervention with early dementia patients, and to gather neuropsychological and neurophysiological data to evaluate outcomes. Strengthening exercise may serve as a useful alternative to aerobic exercise.     

The role of self-evaluation and envy in schadenfreude

In this article we address why and when people feel schadenfreude (pleasure at the misfortunes of others) in both interpersonal and intergroup contexts. Using findings from our own research programmes we show that schadenfreude is intensified when people are chronically or momentarily threatened in their self-worth, whereas it is attenuated when their self-evaluation is boosted; that malicious envy, but not benign envy, intensifies pleasure at the misfortunes of others; that these emotional responses are manifested in intergroup contexts via the same mechanisms; and that mere stereotypes, in the absence of any interaction or overt competition, are sufficient to elicit schadenfreude via such mechanisms. Together, these findings suggest that self-evaluation and envy both play an important role in evoking schadenfreude; people feel pleasure at the misfortunes of others when these misfortunes provide them with social comparisons that enhance their feelings of self-worth or remove the basis for painful feelings of envy.     

CLOSE RELATIONSHIPS AS SOURCES OF STRENGTH OR OBSTACLES FOR MOTHERS COPING WITH HIV

The current study explores the impact of HIV disease on the interpersonal relationships and social support experiences of mothers living with HIV. Analysis of interviews with 25 mothers with HIV focused on their perceptions of the impact of HIV on close relationships with significant others, including family of origin, children, friends, intimate partners, and parents. The results revealed the following major relationship challenges that mothers had to cope with after the discovery of their HIV-positive status: weighing reasons for and against disclosure of their HIV status, whether HIV disclosure brings relationship partners closer together, finding future caregivers for young children if one's health declines, and coordinating safer-sex practices with sexual partners, especially with the many males who are reluctant to use condoms. The study suggests the importance of understanding both the positive and negative aspects of social interactions in coping with HIV and the struggles that mothers have with the consequences of the HIV diagnosis for both themselves and their significant others.     

Us versus them: social identity shapes neural responses to intergroup competition and harm

Intergroup competition makes social identity salient, which in turn affects how people respond to competitors' hardships. The failures of an in-group member are painful, whereas those of a rival out-group member may give pleasure-a feeling that may motivate harming rivals. The present study examined whether valuation-related neural responses to rival groups' failures correlate with likelihood of harming individuals associated with those rivals. Avid fans of the Red Sox and Yankees teams viewed baseball plays while undergoing functional magnetic resonance imaging. Subjectively negative outcomes (failure of the favored team or success of the rival team) activated anterior cingulate cortex and insula, whereas positive outcomes (success of the favored team or failure of the rival team, even against a third team) activated ventral striatum. The ventral striatum effect, associated with subjective pleasure, also correlated with self-reported likelihood of aggressing against a fan of the rival team (controlling for general aggression). Outcomes of social group competition can directly affect primary reward-processing neural systems, which has implications for intergroup harm.