Does diversity in team members’ agreeableness benefit creative teams?

Although deep-level diversity among team members are often discussed as important catalysts of team creativity, little is currently understood about the impact of diversity in team members’ personality on team creativity and team satisfaction. We propose that diversity in team members' agreeableness would reduce the effectiveness of creative teams through its impact on team conflict experienced. To test our hypotheses, we recruited 93 student teams to participate in a laboratory study where each member had their personality traits assessed before engaging in a team creativity task. We found that diversity in team members' agreeableness was positively associated with team task conflict experienced which, in turn, was negatively associated with team creativity. Additionally, we found that diversity in team members' agreeableness was positively associated with team relationship conflict, which, in turn, was negatively associated with team satisfaction. Implications and future directions are discussed

Magnetic helicity in magnetohydrodynamic turbulence with a mean magnetic field

A computational investigation of magnetic helicity of the fluctuatingmagnetic fieldHm in ideal and freely decaying three‐dimensional (3‐D) magnetohydrodynamics (MHD) in the presence of a uniform mean magnetic field is performed. It is shown that for ideal 3‐D MHDHm, which is a rugged invariant in the absence of a mean magnetic field [Frisch et al., J. Fluid Mech. 77, 796 (1975)], decays from its initial value and proceeds to oscillate about zero. The decay of Hm is shown to result from the presence of a new ‘‘generalized’’ helicity invariant, which includes contributions from the uniform magnetic field. The loss of invariance of Hm will diminish the effects of inverse transfer of Hm on freely decaying turbulence. This is demonstrated in a discussion of the selective decay relaxation process

Putting adversity in perspective: Purpose in life moderates the link between childhood emotional abuse and neglect and adulthood depressive symptoms

Background: Childhood emotional abuse and neglect is linked with a host of adverse outcomes later in life, including depression. However, potential psychological resources that may mitigate the adverse outcomes of childhood emotional abuse and neglect are not well-understood. Aims: Drawing from the insight that having a sense of purpose can help individuals deal with setbacks and difficulties better, we propose that purpose in life can also help sufferers of childhood maltreatment cope more effectively and reduce the onset of depressive symptoms. Methods: Participants were drawn from two large, nationally representative studies comprising a total of 3664 respondents. Purpose in life, childhood emotional abuse and neglect, and depressive symptoms were measured with validated scales. Results: We found convergent evidence that purpose in life attenuates the effect of childhood emotional abuse and neglect on subsequent depressive symptoms across a range of measures of mood and depression. Conclusions: The current study highlights the important role played by purpose in life in building resilience, coping against adverse life events, and psychological well-being

Dispositional gratitude moderates the association between socioeconomic status and interleukin-6

Abstract Socioeconomic disparities in health are prevalent and growing in importance as a concern among academics, policymakers, and the general public. However, psychological resources that can narrow such disparities have not been well-examined. The current study examined the moderating role of dispositional gratitude in the relationship between socioeconomic status (SES) and inflammation risk as an index of health. Participants consisted of 1,054 midlife adults from the biomarker project of the Midlife in the United States. Inflammation risk was measured by interleukin-6 biomarker and SES was operationalized by education attainment and income. We found that dispositional gratitude significantly moderated the relationships between SES and interleukin-6. Among individuals with low dispositional gratitude, higher SES was significantly associated with lower levels of interleukin-6. However, the association between SES and interleukin-6 was not significant among individuals with high dispositional gratitude. More importantly, the findings remained robust after controlling for demographic characteristics, health status, health behaviours, and personality traits. Our findings suggest that gratitude may serve as an important psychological resource in attenuating health-related risk from socioeconomic stressors

A bubble of protection: examining dispositional optimism as a psychological buffer of the deleterious association between negative work-family spillover and psychological health

Demands and stressors from work increasingly encroach upon people’s family lives in modern settings, resulting in poorer familial relationships and impaired psychological health. The current study proposed and examined dispositional optimism as a potential psychological buffer of the deleterious impact of negative work-to-family spillover (WFS) on psychological health. Based on a sample of employed midlife adults in the United States (N = 1,252) drawn from a large and nationally representative dataset, MIDUS 3, we found that dispositional optimism significantly moderated the relationship between negative WFS and subjective well-being, even after controlling for a variety of potential confounds. However, this moderation effect was not consistently observed for the relationship between negative WFS and depressive symptoms, suggesting that the buffering utility of dispositional optimism may be limited to day-to-day subjective well-being and may not extend to the domain of mental health issues. Nonetheless, our findings indicate the potential importance of considering psychological resources in our efforts to mitigate strains on psychological health arising from negative WFS – to which future studies are encouraged to explore further

Stellar spectroscopy: Fermions and holographic Lifshitz criticality

Electron stars are fluids of charged fermions in Anti-de Sitter spacetime. They are candidate holographic duals for gauge theories at finite charge density and exhibit emergent Lifshitz scaling at low energies. This paper computes in detail the field theory Green's function G^R(w,k) of the gauge-invariant fermionic operators making up the star. The Green's function contains a large number of closely spaced Fermi surfaces, the volumes of which add up to the total charge density in accordance with the Luttinger count. Excitations of the Fermi surfaces are long lived for w <~ k^z. Beyond w ~ k^z the fermionic quasiparticles dissipate strongly into the critical Lifshitz sector. Fermions near this critical dispersion relation give interesting contributions to the optical conductivity.Comment: 38 pages + appendices. 9 figure

Cooper pairing near charged black holes

We show that a quartic contact interaction between charged fermions can lead to Cooper pairing and a superconducting instability in the background of a charged asymptotically Anti-de Sitter black hole. For a massless fermion we obtain the zero mode analytically and compute the dependence of the critical temperature T_c on the charge of the fermion. The instability we find occurs at charges above a critical value, where the fermion dispersion relation near the Fermi surface is linear. The critical temperature goes to zero as the marginal Fermi liquid is approached, together with the density of states at the Fermi surface. Besides the charge, the critical temperature is controlled by a four point function of a fermionic operator in the dual strongly coupled field theory.Comment: 1+33 pages, 4 figure