面孔部件在群体注意方向判断中的作用

探讨面孔部件(眼睛和鼻子)在个体和群体注意方向判断中的作用。实验1使用不同数量面孔的图片,要求报告群体或个体的注意方向。结果发现,多面孔条件下对群体注意方向估计的准确性高于单面孔条件。实验2采用眼动技术,探讨眼睛和鼻子在判断其注意方向时注视的空间与时间分布特征。结果发现,基于单张面孔判断时,对鼻子的总注视时间长于眼睛;基于多张面孔判断时,对眼睛和鼻子的总注视时间没有差异。整个研究表明,知觉个体注意主要依赖鼻子,知觉群体注意依赖眼睛和鼻子。     

Change in subjective social status following HIV diagnosis and associated effects on mental and physical health among HIV-positive gay men in Australia

Objective: This study investigates the impact of HIV diagnosis on subjective social status and if changes are linked to health outcomes.

Design: Two measures of subjective social status, socio-economic and standing in the community were examined in 342 Australian HIV-positive gay men in 2014. Participants recalled ratings at diagnosis were compared with current ratings.

Main outcome measures: Self-reported mental (psychological distress, self-esteem, positive mental health and satisfaction with life) and physical health (self-rated health, CD4 count, viral load).

Results: Half of the participants reported improvements in subjective socio-economic status (59%) or standing in the community (52%) since diagnosis, yet one quarter reported socio-economic status (25%) or standing in the community had decreased (23%). Increases in either measure of subjective social status were linked to higher self-esteem, positive mental health, satisfaction with life and better self-rated health. Decreases in subjective social status, however, were strongly linked to poorer outcomes on all mental health measures. Decreases in standing in the community were also associated with poorer physical self-rated health.

Conclusion: Most participants reported their subjective social status were the same or better since diagnosis. Changes in subjective social status following diagnosis were strongly linked to mental health outcomes. Those who reported a decrease in subjective social status were particularly vulnerable to mental health problems.     

New polytypes of long-period stacking ordered structures in a near-equilibrium Mg97Zn1Y2 alloy

By atomic-scale high-angle annular dark-field scanning transmission electron microscopy, the long-period stacking ordered (LPSO) structures in a near-equilibrium Mg₉₇Zn₁Y₂ (at.%) alloy have been characterised. In addition to 18R and 14H, new polytypes of LPSO structures are analysed and determined as 60R, 78R, 26H, 96R, 38H, 40H, 108H and 246R. All of these LPSO structures feature AB′C′A building blocks with two Mg layers and three Mg layers sandwiched between them. The Bravais lattices and space groups of new polytypes of LPSO structures were easily determined via the newly introduced method. A structural relationship between the LPSOs is proposed.     

Is it possible to experimentally determine the extension of cognition?

Various analytical tools originally developed for theories of mechanistic explanation have recently been imported into the ongoing debate on the hypothesis of (extracerebrally) extended cognition (HEC). One such tool that appears particularly relevant to that debate is Craver’s mutual manipulability account of constitution (MM), most of all because it promises to settle the debate on experimental grounds. This paper investigates whether it is possible to deliver on that promise. We first find that, far from grounding an experimental evaluation of HEC, MM is conceptually incompatible with both internalist and externalist accounts of cognition. Next, we propose a suitable modification of MM, MM*, but it turns out that MM* presupposes rather than produces clarity on the extension of cognition. Moreover, subject to MM* the inference to constitution is radically empirically underdetermined. Finally, we argue that our results can be generalized and conclude that, for principled reasons, it is impossible to experimentally determine whether cognitive processes have extracerebral constituents. Determining the extension of cognition is an inherently pragmatic matter.     

义符促进类别归纳推理的ERP证据

为了明确义符对归纳推理影响,本研究使用有义符和无义符汉字为材料,使用ERP技术考查义符对不同层级类别概念归纳推理的影响。行为结果显示,有义符条件下反应速度更快,肯定判断率更高。脑电指标上,P3阶段义符主效应显著,有义符条件下P3波幅更大;N1、N400和P600阶段义符与层级交互作用显著,组内简单效应分析显示,层级主效应仅在无义符条件下显著;组间简单效应分析显示,义符主效在N400和P600阶段仅在下-上推理条件下显著,无义符条件下,下-上推理引发更大的N400和P600波幅。这些结果表明,义符促进了归纳推理过程,这种促进主要表现在对下-上推理的促进。     

The Mediating Effects of Self-Esteem and Trait Anxiety Mediate on the Impact of Locus of Control on Subjective Well-Being

Sense of control plays an important role in the psychological well-being of an individual. This study aims to investigate the impact of locus of control on subjective well-being (SWB). Participants include 400 undergraduates (214 men and 186 women) from four universities in China. Data were collected using the Adult Nowicki-Strickland Internal-External Locus of Control Scale, Rosenberg Self-Esteem Scale, Trait Anxiety Scale, and SWB measures. Results suggested that locus of control, trait anxiety, and self-esteem were significantly correlated with SWB. Structural equation modeling results indicated that trait anxiety and self-esteem partially mediated the impact of locus of control on SWB. Moreover, bootstrap test revealed significant paths from locus of control to SWB through trait anxiety and self-esteem. Therefore, locus of control, trait anxiety, and self-esteem have significant impacts on SWB. Moreover, trait anxiety and self-esteem have a mediating effect on the impact of locus of control on subjective well-being.     

Direct and Indirect Effects of Self-efficacy on Depression: The Mediating Role of Dispositional Optimism

In this study, we aimed to explore the impact of self-efficacy on depression – specifically, to test and verify the mediating role of dispositional optimism between the two variables. Five hundred and thirty-five undergraduates from two universities were recruited and given a Self-Efficacy Questionnaire, Revised Life Orientation Test, and Self-Rating Depression Scale. Results indicated that there are indeed significant relationships among self-efficacy, dispositional optimism, and each identified dimension of depression; structural equation modeling showed that the relationship between self-efficacy and depression is partially mediated by dispositional optimism. To this effect, we concluded that to develop and improve students’ self-efficacy will reduce their levels of depression, which may have implications in college counseling.     

Self-Reported Questionnaire Detects Family History of Cancer in a Pancreatic Cancer Screening Program

Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer death; approximately 5–10% of PDAC is hereditary. Self-administered health history questionnaires (HHQs) may provide a low-cost method to detail family history (FH) of malignancy. Pancreas Center patients were asked to enroll in a registry; 149 with PDAC completed a HHQ which included FH data. Patients with FH of PDAC, or concern for inherited PDAC syndrome, were separately evaluated in a Prevention Program and additionally met with a genetic counselor (GC) to assess PDAC risk (n?=?61). FH obtained through GC and HHQ were compared using Wilcoxon signed-rank sum and generalized linear mixed models with Poisson distribution. Agreement between GC and HHQ risk-assessment was assessed using kappa (κ) statistic. In the Prevention Program, HHQ was as precise in detecting FH of cancer as the GC (all p?>?0.05). GC and HHQ demonstrated substantial agreement in risk-stratification of the Prevention Program cohort (κ?=?0.73, 95% CI 0.59–0.87.) The sensitivity of the HHQ to detect a patient at elevated risk (i.e., moderate- or high-risk) of PDAC, compared to GC, was 82.9% (95% CI 67.3–92.3%) with a specificity of 95% (95% CI 73.1–99.7%). However, seven patients who were classified as average-risk by the HHQ were found to be at an elevated-risk of PDAC by the GC. In the PDAC cohort, 30/149 (20.1%) reported at least one first-degree relative (FDR) with PDAC. The limited sensitivity of the HHQ to detect patients at elevated risk of PDAC in the Prevention Program cohort suggests that a GC adds value in risk-assessment in this population. The HHQ may offer an opportunity to identify high-risk patients in a PDAC population.     

The diagnostic and therapeutic uses of family conflicts in a Chinese context: the case of anorexia nervosa

There are two untested cultural beliefs commonly held among family therapists in Hong Kong: (1) Chinese families are reserved in disclosing their conflicts to an 'outsider'; and (2) it would be culturally inappropriate to elicit family conflicts in treatment. In this article, an attempt is made to examine these cultural beliefs based on the results of a qualitative study of thirty-five Chinese patients suffering from anorexia nervosa. These patients and their families have participated in a pre-treatment family interview prior to the commencement of family treatment. The results of the study have shown that the afflicted Chinese families are very willing to disclose their difficulties to the researcher. The onset of the disorder has led to different types of family conflicts including: (1) overt family conflicts related to food refusal; (2) covert family conflicts; (3) increased sibling rivalry; (4) increased parent–child conflict; and (5) marital tension and distress. The clinical implications of this study are discussed at the end of the article.     

《论语》:一种可能的情感解读

在面对三代经礼文化日益衰颓的社会情势时,孔子开始向人之内在情感领域发掘道德实践的理据。这种发掘,一方面使他实现了对传统礼乐的改造,一方面则凿通了经由内在真实情感的抉发而走向儒家性情论伦理思想的义理道路。这种人本主义的情感关怀和情感诉求,渗透于孔子诠释道德要目与道德行为、论《诗》、论乐的诸多言论之中。因此,可以毫不夸张地说,《论语》是一部未言“情”字(“情感”义)而又处处关“情”的著作。