Attachment insecurity as a moderator of cardiovascular arousal effects following dyadic support

We examine the cardiovascular arousal effects of emotional support receipt, and the moderation of these by the support recipient’s and provider’s attachment. Seventy couples engaged in a laboratory dyadic supportive interaction, while their ECG was monitored. With more emotional support, men with high attachment anxiety showed greater arousal reduction during the dyadic interaction, whereas men with low attachment anxiety showed less reduction; additionally, women coupled with partners with high attachment anxiety showed greater arousal reduction, whereas women coupled with partners with low attachment anxiety showed less reduction. Men and women with high attachment avoidance showed less arousal reduction, whereas those with low attachment avoidance showed greater reduction. These results highlight the differential ways in which support gets under the skin.     

Unpacking “evil”: Claiming the core of the Dark Triad

Understanding the nature of “evil” has been challenging for a number of reasons. A productive psychological approach to this problem has been to study antisocial traits associated with negative outcomes. One such approach has grouped together three antisocial personalities known as the “Dark Triad”: Machiavellianism, Narcissism, and Psychopathy. Researchers have proposed various models to account for the common core of these antisocial personalities – a core that might well be considered the psychological equivalent of the core of “evil” – and these models have not been directly compared, to date. We conducted two studies (total N > 700) to compare the utility of the various models using Canonical Correlation Analyses (CCAs). Results confirm that the HEXACO personality model (and, in particular, the Honesty–Humility factor) is not only the most theoretically parsimonious model, it also best accounts for the empirical overlap between these constructs that represents the core of the Dark Triad. Results also support the idea that the core of the Dark Triad represents an alternative life history strategy.     

Community violence exposure and callous–unemotional traits in adolescents: Testing parental support as a promotive versus protective factor

Although callous–unemotional (CU) traits are associated with maladjustment in youth, literature predicting CU using prospective designs is rare. In the present study we examine associations between exposure to community violence, supportive relationships with caregivers, and CU in a sample of 236 low-income youth (M age = 13.00 years, SD = 1.56 years; 43% male; 92% African American) participating in a 3-wave longitudinal study of violence exposure and adjustment. Both promotive and protective models of linkages between exposure to community violence, support, and CU were investigated. Given known sex differences in CU, sex was explored as a moderator. Regression analysis revealed that witnessing and hearing about community violence, aggregated over 2 waves, were positively associated with CU at the final study wave. Supportive relationships with caregivers, aggregated over 2 waves, were negatively associated with CU but did not interact with violence exposure, suggesting that supportive relationships with caregivers has a promotive but not a protective association with CU in the context of exposure to violence. The pattern of associations did not vary by sex. This study informs our understanding of factors that contribute to the development of CU.     

Grain orientation effects on delamination during fatigue of a sensitized Al–Mg alloy

Fatigue crack growth experiments were conducted in humid air (RH~45%) at 25 °C on 29-mm-thick plate samples of an aluminium–magnesium (Al–Mg) 5083-H131 alloy in the long transverse (LT) direction. Samples were tested in both the as-received condition and after sensitization at 175 °C for 100 h. Delamination along some grain boundaries was observed in the short transverse plane after fatigue testing of the sensitized material, depending upon the level of ΔK and K_max. Orientation microscopy using electron backscattering diffraction and chemical analyses using transmission electron microscopy and energy dispersive spectroscopy of grain boundaries revealed that Mg segregation and the orientation of grains had key roles in the observed grain boundary delamination of the sensitized material.     

Palestinian Liberation Theology: Creative Resistance to Occupation

The ongoing Israeli occupation of the Palestinian Territories has widely affected the Christian population in the region. This study focuses narrowly on the diminishing minority of Palestinian Christians, and how their position under occupation has led to the development of Palestinian Liberation Theology and practices of creative resistance. It begins by acknowledging the unique position of Palestinian Christians as liminal yet indigenous members of society. It then explores their complex collective identity, demonstrating how specific facets of their historic identity (i.e. denominationalism, Arabism, and political station) have been preserved, and how these inform their theological and practical responses to the changing socio-political landscape. It goes on to probe the degree of consensus around Palestinian Liberation Theology, as well as prominent manifestations of the ideology in response to occupation. Ultimately, this study finds that Palestinian Liberation Theology represents a creative and valuable contribution to the national struggle for liberation, providing a shared ideology and culturally specific blueprint for revolutionary collective action guided by plurality, nonviolence, and collaboration.     

Novel long-period stacking-ordered structure of martensite in zirconium–cobalt–palladium alloys

A novel long-period stacking-ordered (LPSO) structure of a martensitic phase in a Zr–Co–Pd alloy was discovered and characterized by means of conventional transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy. The new phase had a 6O structure and its lattice parameters were estimated to be a = 0.34, b = 0.45 and c = 1.53 nm. The formation mechanism and the space group of the LPSO structure are described.     

Chemical ordering of Co and Ni in a W-(AlCoNi) crystalline approximant related to Al–Co–Ni decagonal quasicrystals studied by atomic resolution energy-dispersive X-ray spectroscopy

A W-(AlCoNi) crystalline approximant, which is closely related to Al–Co–Ni decagonal quasicrystals, in an Al_72.5Co₂₀Ni_7.5 alloy has been studied by atomic resolution energy-dispersive X-ray spectroscopy (EDS), in an instrument attached to a spherical aberration (Cs)-corrected scanning transmission electron microscope. On high-resolution EDS maps of Co and Ni elements, obtained by integrating many sets of EDS data taken from undamaged areas, chemical ordering of Co and Ni is clearly detected. In the structure of the W-(AlCoNi) phase, consisting of arrangements of transition-metal (TM) atoms located at vertices of pentagonal tilings and pentagonal arrangements of mixed sites (MSs) of TM and Al atoms, Co atoms occupy the TM atom positions with the pentagonal tiling and Ni is enriched in part of the pentagonal arrangements of MSs.     

Developing a cognitive behavioral therapy manual for delayed sleep–wake phase disorder

This article reports the development of a treatment protocol, based on cognitive behavioral therapy (CBT) principles, for delayed sleep–wake phase disorder (DSWPD). The protocol consists of psycho-education, presenting a CBT model for DSWPD, case formulation, motivational interviewing, registering sleep in a diary, strategies to improve the rhythm of sleep and wakefulness, relaxation training, cognitive restructuring, strategies to cope with daytime symptoms, constructing an individualized CBT program, and learning how to deal with relapses. Qualitative data, focusing on how the patients perceived the protocol, were collected within the realm of a trial exploring the efficacy of the protocol. These findings highlighted several advantages but also disadvantages of the therapy. It is our hope that this paper might act as a platform for further clinical work and future research efforts in patients with DSWPD.     

Self-regulation in early childhood: the interplay between family risk,temperament and teacher–child interactions

Abstract

This study investigates the interplay between family risk and the quality of classroom interactions and their impact on self-regulation skills in two groups of children—children from socioeconomically disadvantaged backgrounds (at-risk) and non-risk children. Participants included 485 children (N = 93 classrooms)—233 (N = 47 classrooms) of which were from socioeconomically disadvantaged areas. Temperament was measured using teacher report. Trained observers rated classroom quality via live observations of a typical preschool day. Behavioral regulation was assessed using direct measures and emotional regulation was assessed using a teacher report. Analyses using multiple group structural equation modeling showed that at-risk children had lower levels of cool behavior regulation than non-risk children. In addition, classroom quality was positively linked to cool behavioral self-regulation. Moderating effects were additionally found between family risk and classroom quality on both hot behavioral regulation and emotional regulation. Classroom quality served as a protective factor for children exposed to more risk factors. Results showed complex associations between individual characteristics, classroom quality, and family risk, indicating a need to further explore the interplay among these variables.