跨通道信源检测错觉的实验研究

本研究探讨跨通道信源检测错觉的特点。实验中将简单、无关且易产生视觉和听觉想像的事件随机以看、听、想像看和想像听的一种或两种组合方式让被试感受 ,2天后以视检测、听检测和全检测三种方式判断信源 ,结果均发现跨通道信源检测错觉 ,且信源判断受检测方式影响 ,知觉信息在源检测中具有更大的抗干扰性。研究结果支持信源检测理论。本文最后讨论了信源检测错觉的机制     

人际责任归因与助人意愿的关系

人际责任归因研究是归因研究与责任推断相结合的一个新领域,它将归因理论应用于对他人失败行为的责任分析之中,为行为责任的推断提供了一个崭新的视角。本研究结合助人行为探讨人际责任归因与助人意愿之间的内在联系,204名教育硕士生和大学生被试参与了此项研究,并通过EQS建立了有关归因的控制性、情感反应、责任推断以及助人行为之间关系的结构方程模型。研究结果支持Weiner的人际责任归因理论假设,并且表明在归因与助人意愿关系模型中责任推断与情感反应是双向的而非单向的关系。     

分析性认知风格对偏差反应与冲突探查的影响

采用2Wingdings 2MC@2Wingdings 2MC@2混合设计和相关分析法,考察个体的分析性认知风格对其在完成有、无冲突的推理判断任务时的逻辑反应倾向和冲突探查过程的影响。结果表明分析性认知风格不会直接影响被试完成推理任务的逻辑反应倾向性,高、低分析性认知风格倾向组被试在逻辑反应正确率上不存在显著差异; 但对个体的冲突探查过程会有影响,高、低认知风格倾向组被试在反应自信率上存在显著差异,且冲突探查大小与分析性认知风格显著负相关,这一结果表明那些高分析性认知风格倾向的个体在完成冲突任务时,更可能探查到刻板反应与遵从逻辑规则做出的反应之间的冲突。     

Psychosocial mediation of religious coping styles: a study of short-term psychological distress following cardiac surgery

Although religiousness and religious coping styles are well-documented predictors of well-being, research on the mechanisms through which religious coping styles operate is sparse. This prospective study examined religious coping styles, hope, and social support as pathways of the influence of general religiousness (religious importance and involvement) on the reduced postoperative psychological distress of 309 cardiac patients. Results of structural equation modeling indicated that controlling for preoperative distress, gender, and education, religiousness contributed to positive religious coping, which in turn was associated with less distress via a path fully mediated by the secular factors of social support and hope. Furthermore, negative religious coping styles, although correlated at the bivariate level with preoperative distress but not with religiousness, were associated both directly and indirectly with greater post-operative distress via the same mediators.     

Character Strengths and Deep Connections Following Hurricanes Katrina and Rita: Spiritual and Secular Pathways to Resistance Among Volunteers

This study investigated a conceptual model with two pathways, altruism and perceived spiritual support, leading to resilience among student volunteers following Hurricanes Katrina and Rita (H‐KR). Both strengths share the sense of deep connections. Parallel pathways with the two major constructs were estimated using structural equation modeling, adjusting for demographics and peritraumatic emotional reactions. The two indicators may have served as a protective mechanism for all volunteers despite differing racial/cultural backgrounds. The potential protection of these strength factors was mediated through optimism and hope. Resilience among minority volunteers was associated more with faith‐related strengths, as indicated in the relevant pathway that also contributed to their altruistic actions. The resilience of white volunteers, however, was directly associated with altruism, a strength that does depend heavily on religious beliefs. Further, the modification index suggested a direct path from race to depression.     

Religion and the Use of Complementary and Alternative Medicine (CAM) Among Cardiac Patients

This study investigates the prevalence and predictors of using complementary and alternative medicine (CAM) among middle-aged and older patients prior to cardiac surgery. Additionally, it addresses the correlates of using 10 commonly used CAM therapies. The influence of religion on itemized CAM usage is also explored. Comprehensive data were collected from adult patients undergoing cardiac surgery through a preoperative survey 2 weeks prior to surgery, followed by a telephone interview the day before surgery. More than two-thirds of participants (80.9 %) indicated at least one CAM use. Income, religiosity, education, BMI, employment, and congestive heart failure predicted greater CAM utility. After multiple controls, major cardiac indicators were significantly positively associated with greater utility of CAM. There was also a significant positive association between religiosity and CAM use. Findings suggest considerable CAM use in this cardiac sample and certain associations among cardiac conditions, religiosity, and itemized CAM utilization. Future research is needed to investigate the potential joint therapeutic and adverse effects of drug and herbal remedies in cardiac patients.     

Racial/Ethnic Identity and Subjective Physical and Mental Health of Latino Americans: An Asset Within?

Social Identity Theory indicates that ethnic identity could benefit minority members in a society because of its promotion of a sense of belonging, or of its buffering of the damage of discrimination. Despite growing investigation about Latinos’ overall health, few studies have simultaneously examined the influence of multiple cultural strength factors, especially racial/ethnic identity, social support, and religious attendance, on these outcomes. Using the National Latino and Asian American Study, we examine the potential predictive value of these cultural strength factors on Latinos’ Self-Rated Mental and Physical Health (SRMH and SRPH). Two separate two-step regression models revealed significant positive effects of racial/ethnic identity on both mental and physical health of Latinos, above and beyond the effect of known demographic and acculturation factors, such as discrimination. Religious attendance had a positive effect on SRMH but not on SRPH. The deteriorating roles of discrimination, in mental health only, and that of Length in the US in both outcomes, however, was primarily not altered by entry of these cultural strength factors. The independent direct effect of racial/ethnic identity among Latinos nationwide may suggest that this cultural strength is an internalized protective asset. Longitudinal data is needed to explore its underlying mechanism and long-term impact.     

Dynamic modulation of an orientation preference map by GABA responsible for age-related cognitive performance

Accumulating evidence suggests that cognitive declines in old (healthy) animals could arise from depression of intracortical inhibition, for which a decreased ability to produce GABA during senescence might be responsible. By simulating a neural network model of a primary visual cortical (V1) area, we investigated whether and how a lack of GABA affects cognitive performance of the network: detection of the orientation of a visual bar-stimulus. The network was composed of pyramidal (P) cells and GABAergic interneurons such as small (S) and large (L) basket cells. Intrasynaptic GABA-release from presynaptic S or L cells contributed to reducing ongoing-spontaneous (background) neuronal activity in a different manner. Namely, the former exerted feedback (S-to-P) inhibition and reduced the frequency (firing rate) of action potentials evoked in P cells. The latter reduced the number of saliently firing P cells through lateral (L-to-P) inhibition. Non-vesicular GABA-release, presumably from glia and/or neurons, into the extracellular space reduced the both, activating extrasynaptic GABAa receptors and providing P cells with tonic inhibitory currents. By this combinatorial, spatiotemporal inhibitory mechanism, the background activity as noise was significantly reduced, compared to the stimulus-evoked activity as signal, thereby improving signal-to-noise (S/N) ratio. Interestingly, GABA-spillover from the intrasynaptic cleft into the extracellular space was effective for improving orientation selectivity (orientation bias), especially when distractors interfered with detecting the bar-stimulus. These simulation results may provide some insight into how the depression of intracortical inhibition due to a reduction in GABA content in the brain leads to age-related cognitive decline.     

Wishing for Change in Japan and Canada

Japanese and Canadian university students were compared on the changes they wanted in their lives. Contrary to their characterization as self-effacingly relational and group-minded, Japanese were no more likely than Canadians to wish for social or collective goods. Rather, Japanese were more likely than Canadians to wish for money or material goods, and less likely than Canadians to wish for better family relations, increased self-understanding, and improved academic performance. Whether these findings reflect dissimilar cultural priorities, unequal opportunities and constraints, or both, is discussed.