Stability and strain of decagonal Al-Ni-Co quasicrystal under high pressure up to 70GPa

The stability of high-quality decagonal Al72Ni20Co8 single quasicrystals has been investigated under high pressure up to 67 GPa by means of an in situ angular-dispersive X-ray powder diffraction method using synchrotron radiation and a diamond anvil cell. It is found that the compression behaviour is almost isotropic. On the other hand, the strain behaviour on compression is found to be fairly anisotropic. This means that the quasiperiodic structure in the decagonal Al72Ni20Co8 quasicrystal is much more easily distorted than is the periodic structure.     

Chemical effects on periodicity and structure of decagonal phases in Al-Ni- and Al-Co-based alloys

Abstract

The structures of decagonal phases in binary Al-Ni and Al-Co systems and ternary Al₇₀Ni _x TM_1?x(TM = Co, Rh or Ir) alloys have been studied by electron diffraction. In the Al-Co system, the periodicity of the decagonal phase is 1.6 nm in Al₈₀Co₂₀, and 0.8 nm in Al₇₆.₅Co_23.5 and Al₇₂Co₂₈, suggesting that the stacking rule between Al and Co atoms is different along the c axis for the three alloys. In the ternary systems, diffuse streaks and periodicity systematically vary with the atom substitution of Co for Ni and Ir for Ni, indicating that Ni, Co and Ir atoms play different roles in the decagonal phase and exhibit various sorts of chemical order with Al atoms.     

A new stable icosahedral quasicrystal in the Cd-Mg-Dy system

A new stable icosahedral quasicrystal has been found in annealed Cd-Mg-Dy alloys. The composition of the icosahedral phase was determined to be approximately Cd₆₆Mg₂₁Dy₁₃. Powder X-ray and electron diffraction patterns revealed that the phase has a primitive icosahedral lattice with a quasilattice parameter a_R = 0.5634 nm. The electron diffraction study confirmed that the phase has a well ordered primitive icosahedral structure.     

Motivated Suspicion: Asymmetrical Attributions of the Behavior of Political Ingroup and Outgroup Members

Suspicious attributional thought was assessed in the context of the political behavior of ingroup and outgroup politicians. Strong Democrats and Republicans read a newspaper article describing a Democratic or Republican politician's support of a bill. Half the participants read that the politician may have been motivated by an ulterior motive, obtaining campaign support from companies that benefited from the bill. In two studies, interaction effects revealed that participants discounted the behavior of an outgroup politician when an ulterior motive was salient. In contrast, they failed to discount the behavior of an ingroup politician when an ulterior motive was salient or either politician when no ulterior motive was salient. Study 2 also revealed evidence that negative, other-directed affect mediated the bias in attributional judgments.     

Running away from unwanted feelings: Culture matters

Findings from past research have suggested a link between experiential avoidance and expressive suppression. However, there is emerging evidence showing that the suppression of emotional expression may have different meanings depending on the specific cultural context. Taking a cultural perspective, the present study aimed to examine whether the link between experiential avoidance and expressive suppression is comparable or divergent between two cultural groups [i.e., European Americans (EAs) and Chinese (CH)] with different cultural norms surrounding emotional expression. We hypothesised that the positive association between experiential avoidance and expressive suppression typically found among EAs would be attenuated among CH. Furthermore, the observed cultural group difference in the experiential avoidance–suppression link was hypothesised to be mediated by beliefs in emotional self-control. Data from 224 EA college students and 190 CH college students provided a clear pattern of support for our hypotheses. Implications for current theories on experiential avoidance are discussed.     

Influencing and adjusting in daily emotional situations: A comparison of European and Asian American action styles

Emotions are for action, but action styles in emotional episodes may vary across cultural contexts. Based on culturally different models of agency, we expected that those who engage in European-American contexts will use more influence in emotional situations, while those who engage in East-Asian contexts will use more adjustment. European-American (N=60) and Asian-American (N=44) college students reported their action style during emotional episodes four times a day during a week. Asian Americans adjusted more than European Americans, whereas both used influence to a similar extent. These cultural differences in action style varied across types of emotion experienced. Moreover, influencing was associated with life satisfaction for European Americans, but not for Asian Americans.     

Attention bias modification for reducing speech anxiety

The mechanisms mediating the anxiolytic effects of attention bias modification (ABM) remain unclear. Accordingly, we randomly assigned speech-anxious subjects to receive four sessions of one of three training conditions: ABM, inverse ABM, and control. In the ABM condition, subjects viewed pairs of photographs of models displaying facial expressions of disgust and joy on a computer screen. Probes always replaced the positive face, and subjects pushed a button to indicate the identity of the probe (E or F) as rapidly as possible. In the inverse condition, the probes always replaced the negative face, and in the control condition, the probes replaced each face type equally often. After four training sessions, all groups exhibited statistically indistinguishable, but significant, reductions on self-report, behavioral, and physiological measures of speech anxiety. Self-report and behavioral measures of attentional control improved likewise. Contrary to early studies, ABM was not superior to control procedures in producing reductions on measures of social anxiety.     

Psychological contracts and innovative behavior: a moderated path analysis of work engagement and job resources

This study explored the relationships between psychological contract types and innovative behavior. We focused on the mediating effect of work engagement and the moderating effect of job resources (organizational and social resources). Participants were 267 dyads of research and development engineers and their supervisors from 30 high‐tech companies. Moderated path analysis was used to test the hypotheses. Findings showed that: (a) work engagement fully mediated the negative relationship between transactional contracts and innovative behavior; in addition, it also fully mediated the positive relationship between relational contracts and innovative behavior; and (b) job resources attenuated the former and strengthened the latter mediating effects. These findings contribute to understanding how, why, and when psychological contract types lead to innovative behavior via work engagement.     

Are You What Your Avatar Eats? Health-Behavior Effects of Avatar-Manifested Self-Concept

Drawing on the self-concept activation and goal-priming account of the priming effect, this study examined how self-concept—i.e., ideal self, ought self, and actual self—can be harnessed as a model for avatar customization in digital games to promote healthy-eating behavior. Female participants (N = 133) customized an avatar in a digital game to reflect either the ideal, ought, or actual self. Participants then selected food items for their avatar within the digital game as well as food items for themselves to eat afterward. Results suggest that for participants using an ought-self avatar, the extent to which they were conscious of their health was positively related to healthier food choice both within and after playing the game. No such effect emerged for participants who used an ideal- or actual-self avatar, indicating that participants formed the goal of being healthy only with regard to the ought self. This study demonstrates that avatar customization in a digital game can serve a regulatory function by representing individuals’ duties and responsibilities, thus, causing them to adopt such attributes manifested in their avatar during and after the game.     

Mad enough to see the other side: anger and the search for disconfirming information

The current research explored the effect of anger on hypothesis confirmation-the propensity to seek information that confirms rather than disconfirms one's opinion. We argued that the moving against action tendency associated with anger leads angry individuals to seek out more disconfirming information than sad individuals, attenuating the confirmation bias. We tested this hypothesis in two studies of experimentally primed anger and sadness on the selective exposure to hypothesis confirming and disconfirming information. In Study 1, participants in the angry condition were more likely to choose disconfirming information than those in the sad or neutral condition when given the opportunity to read more about a social debate, and reading the disconfirming information affected their subsequent attitude. Study 2 measured participants' opinions and information selection about the 2008 US Presidential Election and their desire to "move against" a person or object. Participants in the angry condition reported a greater tendency to oppose a person or object, which resulted in the attenuation of the confirmation bias.