Stability of the Positive Mood Effect on Creativity When Task Switching,Practice Effect,and Test Item Differences are Taken into Consideration

Although experimentally induced positive mood can generally last for 20 min and the induced mood is conducive to creative performance, it is still unclear whether the facilitation effect is stable during these 20 min. Two studies were conducted to examine this issue while controlling for the impacts of task switching, practice effect, and test item differences. In Study 1, participants (N = 42) were randomly assigned to positive, negative, and neutral mood conditions. After watching a short video clip, participants answered four items of the Alternate Uses Test (AUT) in 20 min, with 5 min allotted for each item. Creative performance during each 5‐min period was scored in terms of fluency and flexibility. Separate repeated‐measures analyses of variances on these creativity scores showed that positive mood consistently enhanced performance over 20 min. Study 2 further eliminated the effects of test item differences and test order. Participants (N = 131) underwent the same mood induction procedure and answered the same four items of the AUT, except that these items were presented in four different sequences in accordance with the Latin square design. Consistent with the findings in Study 1, Study 2 showed that the facilitation effect of positive mood lasted for 20 min when the interference of task switching, practice effect, and test item differences were minimized. This finding not only sheds light on the debate regarding the stability of experimentally induced positive mood effect, but also contributes to the body of empirical evidence that future studies may use to examine the positive mood effect over a relatively long period of time.     

Associations between multiple health risk behaviors and mental health among Chinese college students

Although there is substantial evidence that health risk behaviors increase risks of premature morbidity and mortality, little is known about the multiple health risk behaviors in Chinese college students. Here, we investigated the prevalence of multiple health risk behaviors and its relation to mental health among Chinese college students. A cross-sectional study was conducted in Wuhan, China from May to June 2012. The students reported their health risk behaviors using self-administered questionnaires. Depression and anxiety were assessed using the self-rating depression scale and self-rating anxiety scale, respectively. A total of 2422 college students (1433 males) aged 19.7 ± 1.2 years were participated in the study. The prevalence of physical inactivity, sleep disturbance, poor dietary behavior, Internet addiction disorder (IAD), frequent alcohol use and current smoking was 62.0, 42.6, 29.8, 22.3, 11.6 and 9.3%, respectively. Significantly increased risks for depression and anxiety were found among students with frequent alcohol use, sleep disturbance, poor dietary behavior and IAD. Two-step cluster analysis identified two different clusters. Participants in the cluster with more unhealthy behaviors showed significantly increased risk for depression (odds ratio (OR): 2.21; 95% confidence interval (CI): 1.83, 2.67) and anxiety (OR: 2.32; 95%CI: 1.85, 2.92). This study indicates that a relatively high prevalence of multiple health risk behaviors was found among Chinese college students. Furthermore, the clustering of health risk behaviors was significantly associated with increased risks for depression and anxiety.     

Does Cognitive Style Moderate Expected Evaluation and Adolescents' Creative Performance: An Empirical Study

Two studies investigated the effects of cognitive and school environmental factors on adolescents' creative performance. The first study tested the effects of expected evaluation and cognitive style on creativity among 89 high school students. The second study tested the effects of evaluation type and cognitive style on creativity among 92 high school students. Study 1 found main effects of expected evaluation and cognitive style on creativity. The interaction between expected evaluation and cognitive style was statistically significant. Under an experimental condition of expected evaluation, field‐dependent adolescents performed more creatively (i.e., higher originality) than those without expected evaluation. Study 2 uncovered main effects of expected evaluation type and cognitive style on creativity but no interactions between expected evaluation type and cognitive style. Adolescents performed better on the dimension of flexibility in a controlling evaluation condition, compared with adolescents in informational evaluation condition, and field‐independent adolescents showed more fluency and originality than field‐dependent adolescents. Together, this research provides a better understanding of the effects of expected evaluation and cognitive style on adolescents' creative performance. Implications for further research are discussed.     

Is There Any Good Reason to Say Goodbye to “Ethnomethodology”?

This paper is an essay about Harold Garfinkel??s heritage. It outlines a response to Eric Livingston??s proposal to say goodbye to ethnomethodology as pertaining to the sociological tradition; and it rejects part of Melvin Pollner??s diagnosis about the changes occurred in ethnomethodological working. If it agrees with Pollner about the idea that something of the initial ethnomethodology??s program has been left aside after the ??work studies?? turn, it asserts that such a turn has nonetheless made possible authentic discoveries. So the paper speaks for a better integration of the two versions of ethnomethodology separated by Pollner.     

Shear band evolution during large plastic deformation of brittle and ductile metallic glasses

Four monolithic metallic glasses (MMGs) with different plasticities varying from brittle to ductile behavior under unconstrained loading were subjected to small punch testing. All specimens undergo large plastic deformation with multiple cobweb-like shear bands under these conditions. The process of shear band evolution was carefully controlled and investigated. Plasticity of MMGs is characterized by equivalent plastic strain ε* (product of shear band density and critical shear offset). Thus, this article provides an experimental basis for a better understanding of the shear band evolution during plastic deformation of MMGs.     

Friction and wear behaviour of Inconel 718 alloy fabricated by selective laser melting after heat treatments

ABSTRACT

The effect of heat treatments (solution and double aging) on friction and wear behaviour of Inconel 718 (IN718) alloy fabricated by selective laser melting (SLM) were studied. After heat treatment of solution and double aging, the friction and wear of the alloy have been improved. The worn surfaces of heat-treated IN718 alloy became smoother, and micro-ploughing became shallower. After solid solution hearting, a portion of the Laves phase ((Ni, Fe, Co)₂(Nb, Ti, Mo)) dissolves into the matrix, after which the γ″ phase (Ni₃Nb) andthe equilibrium phase of the δ phase (Ni₃Nb) precipitates during double ageing. After solution and double aging, nano-scale γ′ (Ni₃(Al, Ti)) and γ″ phases distribute homogeneously in the matrix, which improves the material hardness and wear resistance of the SLMed IN718 alloy.     

Attachment, Acculturation and GHQ-30 of Chinese Students in Japan

This study examines how attachment and acculturation are associated with the general mental health of Chinese students in Japan. The participants were 194 Chinese students living in Japan, who were asked to complete a set of self-reported measures. The results showed that attachment anxiety predicted all subscales of general mental health, and attachment avoidance and acculturation predicted some aspects of general mental health. In addition, the number of years of residence in Japan was also found to be associated with the general mental health. The findings help improving intercultural communication between Asian countries as well as to facilitate clinical intervention and prevention.     

员工谏言的影响作用探究

选取314对公司员工-上司配对被试作为研究对象,采取问卷调查的方法,探讨员工谏言行为对工作结果变量(工作绩效、工作满意度、组织承诺)是否有积极的影响作用。分析结果表明,员工谏言行为对工作绩效和工作满意度有显著正向预测作用,而对组织承诺没有显著作用;与组织公民行为进行比较分析的结果显示员工谏言行为能更好地预测工作绩效,而组织公民行为是更为宽泛的概念,对工作绩效、工作满意度、组织承诺都有一定的预测作用。