Does Avatar Appearance Matter? How Team Visual Similarity and Member–Avatar Similarity Influence Virtual Team Performance

This multimethod study investigated how avatar appearance influences virtual team performance. This study is the first to integrate the framework of social identity model of de‐individuation effects (SIDE) and Self‐Identification theory, using “morphing” techniques. Results were obtained from a 2 (team visual similarity: dissimilar vs. similar team avatars) × 2 (member–avatar similarity: cartoon avatars vs. avatar similar to self) experiment (N = 240). The findings indicated that teams using “morphed team avatars,” which combined both a high degree of team visual similarity and member–avatar similarity in their appearances, performed best on the task, and showed greater social attraction than teams in the other conditions. Moreover, content analysis of the chat conversations revealed that these teams interacted more strategically and expressed a greater motivation to solve the task.     

Complexity of health care needs and interactions in multidisciplinary medical teams

By using an information processing and social identity approach, this study examines the relationships between the complexity of the health care needs of a patient and (1) the interactions among physicians during team meetings and (2) how the meeting participants evaluate the discussion. Three dimensions of the complexity of the health care needs are related to the interactive behaviour of medical specialists during meetings of multidisciplinary medical teams. Three medical teams from a Dutch university hospital, each discussing a total of 40 patients, were observed. The results show that component complexity was positively related to the amount of information team members exchanged, to positive reactions, and to the positive evaluation of the discussion. Two other dimensions (interrelatedness of needs and ambiguity) have to be considered in concert: interrelatedness was positively related to negative reactions but only if ambiguity was low; and, further, ambiguity was positively related to evaluative behaviour and to positive reactions, and negatively to the evaluation of the discussion, but only if interrelatedness was low.     

Domestic violence and mental health in a Dutch community sample: The adverse role of loneliness

The present study explored whether the adverse mental health consequences of domestic violence victimization vary by type of loneliness (i.e., emotional and social loneliness). Participants were drawn from the Dutch city of Rotterdam (N = 7072). Domestic violence victimization, emotional loneliness and social loneliness were associated with self‐reported mental health. In addition, interaction effects were observed between domestic violence victimization and each type of loneliness. Implications for policy practice as well as strengths and limitations of the study were discussed. Copyright © 2010 John Wiley & Sons, Ltd.     

Atrophy of the parietal lobe in preclinical dementia

Cortical grey matter atrophy patterns have been reported in healthy ageing and Alzheimer disease (AD), but less consistently in the parietal regions of the brain. We investigated cortical grey matter volume patterns in parietal areas. The grey matter of the somatosensory cortex, superior and inferior parietal lobule was measured in 75 older adults (38 cognitively stable and 37 individuals with cognitive decline after 3 years). Dementia screening 6 years after scanning resulted in nine AD cases from the cognitively stable (n=3) and cognitive decline group (n=6), who were assigned to a third group, the preclinical AD group. When regional differences in cortical volume in the parietal lobe areas were compared between groups, significant differences were found between either the cognitive decline or stable group on the one hand and preclinical AD individuals on the other hand in the inferior parietal lobule. Group membership was best predicted by the grey matter volume of the inferior parietal lobule, compared to the other parietal lobe areas. The parietal lobe was characterised by a differential atrophy pattern based on cognitive status, which is in agreement with the 'last-developed-first-atrophied' principle. Future studies should investigate the surplus value of the inferior parietal lobe as a potential marker for the diagnosis of AD compared to other brain regions, such as the medial temporal lobe and the prefrontal lobe.     

Changing interactions between teachers and socially inhibited kindergarten children: An interpersonal approach

In a short-term longitudinal intervention study, it was investigated whether a short teacher training in interpersonal theory and the complementarity principle could be used to break negative interaction cycles between teachers and socially inhibited kindergartners. Sixty-five children and their 35 regular teachers were observed in a dyadic task setting, on three occasions. In the training, it was explained that teachers could elicit more initiative from children by being less dominant and more friendliness by being more affiliative. Independent observers rated teachers' and children's interactive behaviors in 5-second episodes. Teachers reported on children's social inhibition. Multilevel analyses showed that the training elicited a decrease in teacher control at follow-up. Unexpectedly, the training increased teachers' complementarity on the affiliation dimension, especially in interactions with highly inhibited children. Implications for theory and practice are discussed.     

Responsivity to stress in chronic posttraumatic stress disorder due to childhood sexual abuse

The purpose of this study was to investigate psychological, cardiovascular, and neuroendocrine reactivity to standardized stress tests (orthostatic challenge, Stroop Color Word Test) in drug-free adult women with chronic PTSD due to repetitive childhood sexual abuse. At baseline, the 11 patients showed significantly higher mean scores on the Symptom Check List-90 and the Profile of Mood States than 13 healthy female controls, whereas baseline cardiovascular or hormonal parameters showed no differences between the groups. Also, no significant differences were found between the two groups in cardiovascular and hormonal responsivity to the stress tests. Thus, in the presence of robust psychological differences, the patients with chronic PTSD due to childhood sexual abuse did not show alterations in baseline values of neurobiological parameters, nor did they react differently to a physical and mental stress test when compared to healthy controls.     

Attention speeds binocular rivalry

During binocular rivalry, incompatible images presented dichoptically compete for perceptual dominance. It has long been debated whether binocular rivalry can be controlled by attention. Most studies have shown that voluntary control over binocular rivalry is limited. We sought to remove attention from binocular rivalry by presenting a concurrent task. Diverting attention slowed the rivalry alternation rate, and did so in proportion to the difficulty of the concurrent task. Even a very demanding distractor task, however, did not arrest rivalry alternations completely. Given that diverting attention was equivalent to lowering the contrast of the rival stimuli, the ability of attention to speed binocular rivalry is most likely due to an increase in the effective contrast of the stimuli through boosting the gain of the cortical response. This increase in effective contrast will ultimately lead to a perceptual switch, thereby limiting voluntary control. Thus, attention speeds rivalry alternations, but has no inherent control over the rivalry process.     

The mother-offspring relationship as a template in social development: reconciliation in captive brown capuchins (Cebus apella)

Mother-offspring (MO) relationship quality was investigated to determine its influence on the development of reconciliation--affiliation between opponents shortly after a fight--because it influenceswhat distressed youngsters learn about calming down. Data were longitudinal and cross-sectional observational samples of 38 MO pairs of monkeys across 24 months. An MO relationship quality index (RQI) classified each pair as secure or insecure. Reconciliation emerged in infancy.Secure youngsters had an appeasing conciliatory style, and insecure youngsters had an agitated conciliatory style. Conclusions are that reconciliation develops from the attachment behavior system and MO RQI is related to the particular conciliatory style youngsters develop by affecting how aroused they are by conflict and the subsequent socializing they seek to calm down.