Screening for Posttraumatic Stress Disorder: an evaluation of two self-report scales among crime victims

The validity of the Impact of Events Scale (IES) and the Posttraumatic Stress Disorder (PTSD) Symptom Scale, Self-Report version (PSS-SR) was examined among crime victims. Both instruments performed well as screeners for PTSD. For the IES, sensitivity ranged between .93 and 1.00; for the PSS-SR, sensitivity ranged between .80 and .90. Specificity for the IES ranged between .78 and .84 and for the PSS-SR ranged between .84 and .88. Some individual items from the 2 scales performed just as well as the total scales. The authors conclude that either of these short self-report instruments or their individual items are suitable as screeners for PTSD, specifically in settings where mental health professionals are unavailable. Cross-validation of these results is necessary because of the small sample size in this study.     

Novice chimpanzees cooperate successfully in the presence of experts,but may have limited understanding of the task

Despite many observations of cooperation in nature, laboratory studies often fail to find careful coordination between individuals who are solving a cooperative task. Further, individuals tested are often naïve to cooperative tasks and there has been little exploration of partnerships with mixed expertise. In the current study, we examined acquisition of a cooperative pulling task in a group with both expert (N = 4) and novice (N = 11) chimpanzees (Pan troglodytes). We used five measures of competence and understanding: (1) success at the task, (2) latency to succeed, (3) efficiency, (4) uncoordinated pulling, and (5) pulling when a partner was present versus absent. We found that novices showed evidence of trial and error learning and developed competence over time, whereas the behavior of experts did not change throughout the course of the study. In addition to looking at patterns over time, we compared the performance of novices in this mixed-expertise group to an earlier study of novices in a group of all-novices. Novices in the mixed-expertise group pulled the same overall amount but for shorter periods of time, leading to higher pulling rates than individuals in the all-novice group. Taken together, these results suggest that learning in the presence of experts led to rapid and frequent success, although not necessarily careful coordination.     

Creative writing for life design: Reflexivity,metaphor and change processes through narrative

To survive and thrive on the labor market of the 21st century, individuals must construct their identities in a process of meaning making, where identity is co-constructed in the form of a narrative. In order to better understand the nature and elements involved in this career-identity change process the Interpersonal Process Recall interview (IPR) method was used to examine the results of a two-day Career Writing (Lengelle, 2014) intervention. The exploration regarding what prompted changes and how reflexivity was developed, was done by having each of two participants bring in pieces written during the course and having the interviewer ask what thoughts and feelings were remembered at the time of writing. The IPR process revealed that Career Writing enables participants to first enter into feelings, then make sense of those by finding the ‘right’ words to describe them, and experience (by thinking and feeling) that their ‘new story’ makes sense on a gut level and provides meaning. This process is made possible by an internal and an external dialogue where various I-positions (voices within the self) speak and where metaphors and analogies concretely facilitate meaning making.     

Involuntary language switching in two bilingual patients during the Wada test and intraoperative electrocortical stimulation

We present two bilingual patients without language disorders in whom involuntary language switching was induced. The first patient switched from Dutch to English during a left-sided amobarbital (Wada) test. Functional magnetic resonance imaging yielded a predominantly left-sided language distribution similar for both languages. The second patient switched from French to Chinese during intraoperative electrocortical stimulation of the left inferior frontal gyrus. We conclude that the observed language switching in both cases was not likely the result of a selective inhibition of one language, but the result of a temporary disruption of brain areas that are involved in language switching. These data complement the few lesion studies on (involuntary or unintentional) language switching, and add to the functional neuroimaging studies of switching, monitoring, and controlling the language in use.     

Countering Fallacious Moves

Van Eemeren and Houtlosser view fallacies as “derailments of strategic maneuvering” that go against a norm for critical reasonableness. What is to happen if such a derailment is perceived to have taken place? Krabbe (2003) and Jacobs (2000) have discussed the possibilities for continuing the argumentative exchange in a constructive way. Starting from their proposals, van Eemeren and Houtlosser argue that the party who observes that something has gone wrong should maneuver in such a way that at the same time the derailment is recognized and a “re-railment” takes place that brings the discussion back on track. This means that then a meta-dialogue or sub-discussion develops in which the alleged fallacy is responded to and readjusted appropriately. Although this solution has something in common with both Krabbe’s proposal and Jacobs’ proposal, it differs from Krabbe’s proposal because it does not result in just retracting or maintaining the alleged fallacy and it differs from Jacobs’ proposal because it does not allow for making a move that has the appearance of a counter-fallacy.     

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.     

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.     

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.