Relationships Among Career and Life Stress,Negative Career Thoughts,and Career Decision State: A Cognitive Information Processing Perspective

According to cognitive information processing theory, career thoughts mediate the relationship between career and life stress and the ensuing career decision state. Using a sample of 232 college students and structural equation modeling, this study found that an increase in career and life stress was associated with an increase in negative career thinking and that an increase in such thoughts was associated with a lower level of decidedness and satisfaction with career choice. However, when the variation associated with negative career thoughts was partitioned in the mediated causal model, career and life stress became associated with less career indecision and dissatisfaction with career choice. The results suggest that counselors attend to negative career thoughts when individuals encounter career and life stress.     

CEO grandiose narcissism and firm performance: The role of organizational identification

This study reconciles the positive and negative sides of CEO grandiose narcissism by examining the role that CEO organizational identification plays in moderating the effect of CEO grandiose narcissism on top management team (TMT) behavioral integration. We first distinguish between grandiose and vulnerable narcissism and we then draw on upper echelons theory and executive personality research to hypothesize and test a model in which CEO grandiose narcissism is positively related to TMT behavioral integration when CEOs are high in organizational identification. The relationship is expected to be negative when CEOs do not identify strongly with their organizations. TMT behavioral integration, in turn, predicts subsequent firm performance. Findings based on multi-source data from a sample of 97 CEOs and their firms supported the hypotheses. These results highlight the complex nature of CEO grandiose narcissism – namely, that the construct has both positive and negative aspects as it relates to top management team dynamics and firm performance and that the relationship is affected by CEOs' identification with their organizations.     

Talking with like-minded people—Equality and efficacy in enclave deliberation

Enclaves of like-minded people are often seen as problematic from a democratic point of view, as they have been found to lead to both group polarization and an amplification of cognitive errors. Nevertheless, enclaves can also act as protected spaces have the opportunity to discuss politics with their peers. As a result, people who are less well-endowed to face political disagreement can find it easier to engage in politics. In order to study the ‘empowering’ potential of enclave deliberation, we use data from a population-based experiment (n = 207). The participants were randomly allocated to two treatments. Some participants deliberated in groups consisting of people with similar baseline views on immigration (like-minded treatment), whereas others deliberated in groups where both restrictive and permissive participants were present (mixed treatment). We hypothesize that (1) discussion in like-minded groups is more equal than in mixed opinion groups and that (2) participants with lower resources feel politically more efficacious after deliberation in like-minded than in mixed groups. Our results suggest that people with higher resources tend to be more active regardless of treatment. Nevertheless, we also find that among those with lower resources deliberation in like-minded groups generates a higher sense of equality than discussion in mixed opinion groups.     

Spatial prediction of crystalline defects observed in molecular dynamic simulations of plastic damage

Molecular dynamic computer simulation is an essential tool in materials science to study atomic properties of materials in extreme environments and guide development of new materials. We propose a statistical analysis to emulate simulation output with the ultimate goal of efficiently approximating the computationally intensive simulation. We compare several spatial regression approaches including conditional autoregression (CAR), discrete wavelets transform (DWT), and principle components analysis (PCA). The methods are applied to simulation of copper atoms with twin wall and dislocation loop defects, under varying tilt tension angles. We find that CAR and DWT yield accurate results but fail to capture extreme defects, yet PCA better captures defect structure.     

Purchase deadline as a moderator of the effects of price uncertainty on search duration

A longstanding theoretical tenet in the economic psychology literature is that consumers respond to greater price uncertainty by increasing search. The generality of this tenet was investigated in the context of a moderating variable, purchase deadline. It was hypothesized that the effect of increased price uncertainty, as reflected by both cross-sectional price variability and longitudinal price variability, was moderated by temporal proximity to a purchase deadline. The hypothesis was tested by analyzing purchase data from a sample of consumers with known purchase deadlines searching for rental trucks. The results indicated that search increased in response to greater price uncertainty for distant deadlines but decreased in response to greater price uncertainty for proximal deadlines.     

Social cognitive neuroscience and leadership

We provide an overview of how the emerging field of social cognitive neuroscience can be linked to leadership theory and practice. A number of challenges are addressed, including theory development, as well as technical, measurement and methodological issues. In addition, we review recent leadership research that involves neuroscience applications, as well as areas that are closely related to leadership, such as emotional regulation and ethical reasoning and decision-making. Consideration is also given to how neuroscience might inform leadership development processes. We conclude with a discussion of the institutional challenges in conducting leadership research that incorporates neuroscience, and we consider potential limitations of such applications.     

Genetically Engineered Plants, Endangered Species, and Risk: A Temporal and Spatial Exposure Assessment for Karner Blue Butterfly Larvae and Bt Maize Pollen

Genetically engineered maize (Zea mays) containing insecticidal endotoxin proteins from Bacillus thuringiensis (Bt) delta-endotoxin proteins has been adopted widely in the Midwestern United States. The proteins are toxic to several lepidopteran species and because a variety of maize tissues, including pollen, may express the endotoxins, the probability of exposure to nontarget species, including endangered species, needs to be understood. The objective of this study was to assess the potential temporal and spatial exposure of endangered Karner blue butterfly larvae (Lycaeides melissa samuelis) to Bt maize pollen in Wisconsin using probabilistic exposure techniques and geographic information systems analysis. Based on degree-day modeling of butterfly phenology and maize pollen shed, there is some potential for temporal exposure of larvae to maize pollen. However, in the majority of years and locations, maize pollen shed most likely will occur after the majority of larval feeding on wild lupine (Lupinus perennis). The spatial analysis indicates that some Karner blue butterfly populations occur in close proximity to maize fields, but in the vast majority of cases the butterfly's host plant and maize fields are separated by more than 500 m. A small number of potential or existing Karner blue butterfly sites are located near maize fields, including sites in two of the four counties where temporal overlap is most likely. The exposure assessment indicates that these two counties should receive the highest priority to determine if Karner blue butterfly larvae are actually at risk and then, if needed, to reduce or prevent exposure.     

A Multistate model of fecundability and sterility

This paper develops a multistate hazards model for estimating fecundability and sterility from data on waiting times to conception. Important features of the model include separate sterile and nonsterile states, a distinction between preexisting sterility and sterility that begins after initiation of exposure, and log-normally distributed fecundability among nonsterile couples. Application of the model to data on first birth intervals from Taiwan, Sri Lanka, and the Amish shows that heterogeneity in fecundability is statistically significant at most ages, but that preexisting sterility and new sterility are unimportant before age 40. These results suggest that sterility may not be an important determinant of natural fertility until later reproductive ages.     

Homeless youths' perceptions of services and transitions to stable housing

Use of available services is low among homeless youths, and how youth make decisions to access services or seek housing is unclear. This study explored perspectives of current and former street youth about these processes. Recruited from the streets and a drop-in center, 27 youth ages 16–24, participated in individual qualitative interviews. Findings from consensual qualitative analyses indicated choices to use services were embedded within developing autonomy and identification with street lifestyles. Themes of self-reliance, substance use, and relationships with street and housed persons were expressed as critical for both using services and transitioning to stable housing. Agency-related factors such as caring staff, a nonjudgmental atmosphere, and flexible policies were perceived as important for service use while youth-related factors such as experiencing major events, being internally motivated, and embracing mainstream values were seen as conducive to transitioning off the streets. Implications for service providers and future research are discussed.     

Occupational therapy students' contribution towards enabling potential in a semi-rural community

Occupational therapy students at the University of Pretoria engage in a 7-week service learning fieldwork in their fourth year. This fieldwork takes place in a semi-rural community. The article reports on a successful project where the students enabled adult learners with disabilities to improve their engagement in meaningful activities and trained the learners in selected prevocational skills. The students included a teacher from the center and she was given the opportunity to expand her skills in teaching as well. The ZOPP model of community project planning was used and proved to be a useful tool for students who have limited time for planning, implementation and evaluation of a project.