Decision making is affected in obstructive sleep apnoea syndrome

We assessed decision making in 20 patients newly diagnosed with obstructive sleep apnoea (OSA) and 20 healthy controls with the Iowa Gambling Task (IGT), which evaluates the ability to learn to sacrifice immediate rewards in favour of long‐term gains. A standard neuropsychological battery was administered. Switching scores tended to be lower in patients. Patients persisted in selecting risky decks throughout the IGT, whereas controls behaved normally. Performance was correlated with hypoxaemia. Brain regions underlying decision making may be affected by OSA‐related hypoxaemia.     

Trauma-Related Negative Cognitions Mediate the Relationship Between Avoidant Personality Beliefs and Impeded Response to Psychotherapy for PTSD

There is strong research evidence for the association of personality pathology and posttraumatic stress disorder (PTSD), as well as trauma-related negative cognitions (TRNC) and PTSD symptoms. However, the relationship between personality pathology and TRNC in the context of PTSD is mostly unknown. In the present study, we aimed to examine whether avoidant and borderline personality beliefs (PB, indicator of personality pathology) could predict therapy outcome in PTSD, and whether the relationship between PB and therapy outcome could be mediated by TRNC. Sixty patients with PTSD were assessed for PB, TRNC and PTSD symptoms at baseline, and for PTSD symptoms at the termination of Prolonged Exposure Therapy. Baseline avoidant PB predicted significant variance in PTSD symptoms at termination over and above baseline PTSD symptoms (16% reduction in treatment effect per SD on avoidant PB). Moreover, TRNC at baseline fully mediated the relationships between baseline avoidant PB and PTSD symptoms at termination. This is the first study to show that avoidant PB predicts treatment response in PTSD, and that patients with avoidant beliefs are more vulnerable to have TRNC, which are associated with impeded therapy response. Our results highlight the importance of targeting both dysfunctional PB and TRNC in PTSD interventions.     

The study of organizational behaviour in family business

Family businesses (FBs)—enterprises that are significantly influenced by family members and kinship ties—are ubiquitous and play a crucial role across all world economies. Because of the embeddedness of family and business systems in FB, these organizational forms are theoretically distinct from their non-family counterparts. Curiously, FBs have been largely overlooked in the organizational behaviour (OB) literature. The limited available research at the interface of OB and FB highlights the importance of FB as a unique context to advance OB theories, and of OB as a promising discipline to increase our understanding of FB. In a selective review of literature focused on the four topics of values and goals, leadership and power, trust and justice, and conflict, we discuss how insights from the general theory of communal and exchange relationships open exciting avenues for research at the FB-OB interface. Rich fruits of intellectual harvest await scholars who focus on behavioural research in FB.     

How psychological stress in the workplace influences presenteeism propensity: A test of the Demand–Control–Support model

The aim of this study is to examine the influence of the sources of psychological stress at work assumed by the Demand–Control–Support (DCS) model on presenteeism propensity. Research propositions are derived from the dynamic version of the Demand–Control model, to which we added the dimension of social support, which is part of the DCS model. Data were obtained from a large representative sample consisting of 1609 public and private sector workers living in the Canadian province of Québec, who responded to a questionnaire, administered using computer-assisted interviewing over a 3-month period in 2007–2008. The results indicate that the combination of low decision authority and high supervisor's support attenuates the positive relationship between job demands and presenteeism propensity within a 10-year time frame of exposure to a new job.     

Affective Priming Effects in the Left and Right Cerebral Hemispheres in Patients With Alzheimer's Disease

Alzheimer’s disease (AD) patients and control subjects were tested in an affective priming paradigm associated with an affective discrimination task. Two pictures, one affectively positive or affectively negative and the other neutral, were presented simultaneously in the right and in the left visual fields; the participants had to decide which of the two pictures was the most affectively positive or negative. The target pictures were preceded by a prime picture that was either affectively positive, affectively negative, or neutral. The principal result was the observation, in AD patients as well as in control subjects, of negative affective priming effects for targets presented in the right hemisphere, and of positive affective priming effects for targets presented in the left hemisphere. The presence of affective priming effects suggests that AD patients have no particular deficit in the automatic activation of emotional information; the fact that priming effects were also observed for targets presented in the left hemisphere showed that AD patients probably have no left hemisphere deficit in the automatic activation of emotional information. However, in AD patients, affective priming effects were significant with negative targets but not with positive targets, which could suggest that AD patients processed positive targets in a more semantic way than negative targets.     

Etude des Facteurs psychosociaux,du burnout,de la Vigueur et des troubles musculosquelettiques chez les soignants hospitaliers

Psychosocial factors, the burnout and the musculoskeletal disorders coexist in health professionals at the hospital. From 176 answers to a questionnary built from Karasek (1990) and Siegrist (1996) theories of psychosocial factors, Shirom (2004) of burnout and vigor and finally Kuorinka (1987) of musculoskeletal disorders, we measure and put in link these different aspects, then we propose a predictive model for burnout and pains.     

Nestling barn owls assess short-term variation in the amount of vocally competing siblings

Assessing the amount of rivals is crucial to optimally adjust investment into a contest. If laboratory animals show numerical abilities, little is known about the ecological implications particularly in young animals. The two to nine barn owl (Tyto alba) siblings vocally compete for priority of access to food resources before parents actually deliver them. In dyads, the individual that vocalizes at the highest rate in the absence of parents deters its siblings from competing for next delivered prey. We tested the novel hypothesis that to optimally adjust vocal investment, barn owl nestlings assess how many of their siblings are currently competing. To singleton owlets, we broadcasted a fixed global number of calls emitted by one, two or four pre-recorded unfamiliar nestlings. We could thus distinguish the independent effect on singletons’ vocal behavior of the global number of calls produced by a brood from the number of competitors that produced these calls. Overall, nestlings retreated more from vocal contest when facing more competitors. However, in front of one highly motivated competitor, nestlings refrained from vocalizing to a larger extent than when competing against more but less motivated individuals. Therefore, young animals assess variation in the number of currently competing siblings based on individual-specific vocal cues.     

Evolutionary origins of human handedness: evaluating contrasting hypotheses

Variation in methods and measures, resulting in past dispute over the existence of population handedness in nonhuman great apes, has impeded progress into the origins of human right-handedness and how it relates to the human hallmark of language. Pooling evidence from behavioral studies, neuroimaging and neuroanatomy, we evaluate data on manual and cerebral laterality in humans and other apes engaged in a range of manipulative tasks and in gestural communication. A simplistic human/animal partition is no longer tenable, and we review four (nonexclusive) possible drivers for the origin of population-level right-handedness: skilled manipulative activity, as in tool use; communicative gestures; organizational complexity of action, in particular hierarchical structure; and the role of intentionality in goal-directed action. Fully testing these hypotheses will require developmental and evolutionary evidence as well as modern neuroimaging data.     

The role of sound intensity and stop-consonant voicing on McGurk fusions and combinations

The present paper argues that generalisation is conservative. Our goal was to experimentally study the links between knowledge generalisation and the storage of contextual elements. The knowledge domain, very simple chess configurations, allowed subjects, novices in chess, to acquire micro-expertise based on the analysis of a single source problem. In the first experimental phase, subjects had to analyse a source problem. We induced two modes of source-problem encoding: In the first group, subjects were given explanations focused on the sequence of elementary solving steps; in the other group they were given the general principle relevant to the category of problems in question. Subjects had then to solve different tests (solving isomorphic problems, recall tests, similarity tests) designed to answer two questions: The first question was to test whether the experimental manipulation in the two groups had in fact generated knowledge that varied in abstractness; the second question was to determine whether generalisation is accompanied by storage of surface features of the source problem. Results show that the knowledge generalisation is conservative. Subjects who generalise their knowledge have a better memory retention of context-dependent elements than the other subjects.     

Organizational Support,Job Resources,Soldiers’ Motivational Profiles,Work Engagement,and Affect

The authors examined the relationships between soldiers’ motivational profiles and work correlates. Results showed that the profiles differentially related to perceived organizational support and work engagement in both samples, as well as to communication, supervisor support, and positive and negative affect in Sample 2. Specifically, soldiers with the highest autonomous motivation scores displayed the highest levels of perceived organizational support and work engagement. Moreover, the highest levels of autonomous motivation were associated with the highest levels of communication, supervisor support, and positive affect. Finally, soldiers with low to moderate levels of autonomous motivation reported higher levels of negative affect than those characterized by high autonomous motivation scores. Theoretical and practical implications of the findings are discussed.