Transformational Leadership and Creative Problem‐Solving: The Mediating Role of Psychological Safety and Reflexivity

Previous research has pointed to the importance of transformational leadership in facilitating employees' creative outcomes. However, the mechanism by which transformational leadership cultivates employees' creative problem‐solving capacity is not well understood. Drawing on theories of leadership, information processing and creativity, we proposed and tested a model in which psychological safety and reflexivity mediate the effect of transformational leadership and creative problem‐solving capacity. The results of survey data collected at three points in time indicate that transformational leadership facilitates the development of employees' creative problem‐solving capacity by shaping a climate of psychological safety conducive to reflexivity processes. However, the findings also indicate that psychological safety is related both directly and indirectly, through reflexivity, to employees' creative problem‐solving capacity. This study sheds further light on the ways in which transformational leaders help to develop and cultivate employees' capacity for creative problem‐solving.     

Influence of electroencephalography neurofeedback training on episodic memory: A randomized,sham-controlled,double-blind study

The relationships between memory processes and oscillatory electroencephalography (EEG) are well established. Neurofeedback training (NFT) may cause participants to better regulate their brain EEG oscillations. The present study is a double-blind sham-controlled design investigating the effect of NFT on memory. NFT included up-training upper alpha (UA) band, up-training sensory-motor rhythm (SMR) band and sham protocol. Thirty healthy adult volunteers were randomly divided into three treatment groups. NFT sessions (30 min each) took place twice weekly for a total of 10 sessions while memory testing took place pre- and post-training. The results indicate dissociation between SMR and UA NFT and different memory processes. While the SMR protocol resulted in improving automatic, item-specific and familiarity-based processes in memory, the UA protocol resulted in improved strategic and controlled recollection. The implications of the results are discussed.     

An Experience for the Lifelong Journey: The Long-Term Effect of a Class Visit to a Science Center

ABSTRACT

The aim of this study was to explore the multiple outcomes of a class visit to a science center, and to investigate changes in these outcomes over time. The study is significant because relatively little research has been conducted on the long-term effects of school museum visits. The study was carried out in the National Museum of Science, Technology and Space in Israel, which is the largest science museum in the country. Participants were 8th-grade students who had a guided visit in the museum. Students from this class were interviewed immediately after and then again 16 months after the visit. The short- and the long-term interviews were analyzed according to 3 main categories that addressed meaningful learning outcomes: connecting knowledge, communicating knowledge, and fostering lifelong learning. After 16 months the students retained details of the experience; indicated the contribution of the visit to their knowledge; and emphasized peer interactions during the visit. This highlights the significant educational values that students take to their life's journey from the informal learning experience.     

Endurance factors improve hippocampal neurogenesis and spatial memory in mice

Physical activity improves learning and hippocampal neurogenesis. It is unknown whether compounds that increase endurance in muscle also enhance cognition. We investigated the effects of endurance factors, peroxisome proliferator-activated receptor δ agonist GW501516 and AICAR, activator of AMP-activated protein kinase on memory and neurogenesis. Mice were injected with GW for 7 d or AICAR for 7 or 14 d. Two weeks thereafter mice were tested in the Morris water maze. AICAR (7 d) and GW improved spatial memory. Moreover, AICAR significantly, and GW modestly, elevated dentate gyrus neurogenesis. Thus, pharmacological activation of skeletal muscle may mediate cognitive effects.     

Running is the neurogenic and neurotrophic stimulus in environmental enrichment

Environmental enrichment (EE) increases dentate gyrus (DG) neurogenesis and brain-derived neurotrophic factor (BDNF) levels. However, running is considered an element of EE. To dissociate effects of physical activity and enrichment on hippocampal neurogenesis and BDNF levels, young female C57Bl/6 mice were housed under control, running, enrichment, or enrichment plus running conditions, and injected with bromodeoxyuridine. Cell genesis was assessed after 12 d and differentiation was analyzed 1 mo later. In addition, locomotor activity in the open field and hippocampal mature BDNF peptide levels were measured. Open-field adaptation was improved in all groups, compared to controls, but more so with running. New cell proliferation, survival, neuron number, and neurotrophin levels were enhanced only when running was accessible. We conclude that exercise is the critical factor mediating increased BDNF levels and adult hippocampal neurogenesis.     

Social support networks, stress, sense of coherence and academic success of university students with learning disabilities

The current study evaluated the extent to which 191 university students with learning disabilities (LD) differed from 190 students without disabilities in terms of their perceived social support, stress and sense of coherence. The study also investigated students’ perceptions of their academic success at university as compared with their rating of their struggles and failures. Findings indicated that students with LD perceived themselves as having less social support than did students without LD. Students without LD were more likely than students with LD to attribute their academic success to study skills and to their academic characteristics, while students with LD were more likely to attribute their academic success or lack of success to external factors. Although overall the levels of stress reported by the entire sample were relatively low, students with LD tended to experience slightly higher academic stress than students without LD.     

Aggression,anger and hostility: Evaluation of moral disengagement as a mediational process

This study examines how the mechanisms underlying moral disengagement serve as a mediator between anger and hostility and physical and verbal aggression. The study was carried out on 424 participants (61.1% females), aged 15 to 25 years, assessing the direct and indirect effects of the distinct variables using a hierarchical multiple regression analysis and structural equation modeling. The findings suggest that anger and hostility contribute independently and positively to physical and verbal aggression. Moreover, the relationships between anger, hostility, and aggression appear to be mediated by moral disengagement. Indeed, this process of mediation was invariant across sexes, and it tended to be stronger for physical – as opposed to verbal – aggression.     

Teaching the Bible as a common culture

This essay discusses the teaching of Bible in the Israeli public school as reflected in the encounter between new immigrants and long-time Israelis during the two first decades of the state. The Israeli secular curriculum defines the study of the Bible as a prime agent of Zionist acculturation. This definition, however, was challenged by the arrival of new immigrants, pupils and teachers alike, who did not view the Bible – as it was taught in secular schools – as primarily a means of reinforcing the link between Jews and their land. For them, this conception had no resonance in the traditional cultures in which they had been reared, which perceived and taught the Bible as an important component in defining Jewish religious identity. The result was cultural interaction, which expressed itself in various ways. Some immigrants assimilated the prevalent secular view of the Bible, while others expressed reservation and continued to voice criticism. At the same time, there were non-immigrant teachers who adopted immigrant usages, for instance, men covering their heads during Bible lessons. But there was also interaction between teachers of varying background, and here the result was an amalgam, even a fruitful pluralism of approaches.     

Acquisition of early words from single-word and sentential contexts

Toddlers 15 and 18 months of age were exposed to audiovisual recordings of two novel words paired with novel toys. The words were presented in familiar sentence frames or in isolation. Linguistic context had a greater effect on younger than on older infants. Specifically, 15-month-old boys exhibited successful learning only in the context of single words, and 15-month-old girls did so only for words presented in sentences. Older infants acquired the new words from both contexts, and they learned more rapidly than younger infants. Receptive and expressive vocabulary made no independent contribution to performance.     

Gender and autistic personality traits predict perspective-taking ability in typical adults

Adopting another’s visual perspective is exceedingly common and may underlie successful social interaction and empathizing with others. The individual differences responsible for success in perspective-taking, however, remain relatively undiscovered. We assessed whether gender and autistic personality traits in normal college student adults predict the ability to adopt another’s visual perspective. In a task differentially recruiting VPT-1 which involves following another’s line of sight, and VPT-2 which involves determining how another may perceive an object differently given their unique perspective (VPT-2), we found effects of both gender and autistic personality traits. Specifically, we demonstrate slowed VPT-2 but not VPT-1 performance in males and females with relatively high ASD-characteristic personality traits; this effect, however was markedly stronger in males than females. Results contribute to knowledge regarding ASD-related personality traits in the general population and the individual differences modulating perspective-taking abilities.