当代中学生与其父母价值观的异同

本研究以一个完整家庭(包括父亲、母亲、子女)为单位,基于施瓦茨的价值观理论,对上海及其周边中小城市、农村的107个14-17周岁的在校中学生家庭进行了价值观调查。在考察子女与其父母价值观差异的同时,运用多元回归分析探索当代中学生与父母价值观的相似性。结果表明,父母双方与子女价值观存在较大差异,其中母亲与子女的价值观差异更大;但子女与父母在集体主义价值观维度上表现出显著的相似性。     

教师心理健康内隐观研究

本研究在对300名中小学教师进行预调查的基础上,得出中小学教师认为的教师心理健康的30个特征。以此基础上编制了正式的调查表,以杭州市12所中小学的464名教师为调查对象,要求他们对各特征的重要性进行评分。结果显示：中小学教师认为心理健康的教师应具有道德品质、人际关系、责任感、自我效能和情绪、创造力、工作态度和素质六方面的特征;中小学教师普追认为比较重要的心理健康的特征有责任心、爱心、良好的道德品质、工作认真踏实、待人处事客观公正、积极进取、良好的人际关系等。性别、年龄、学历等因素对教师的心理健康内隐观的影响十分显著。     

A distributed intercortical processing of binocular rivalry: psychophysical evidence

When dissimilar visual scenes are viewed dichoptically, the observer perceives several different representations of the scene over time. To reveal that a distributed intercortical network mediates this phenomenon of binocular rivalry, we used a Kanizsa square-like display consisting of four pairs of color-rivalry-inducing elements. We found that when all four dominant elements had the same color, regardless of whether they were from the same or different eyes, the visual system ably integrated them into a larger subjective surface. Once formed, the same-colored subjective surface enjoyed a relatively longer predominance than mixed-colored patterns. During rivalry alternation, this same-colored surface was more likely to be replaced by a complementary same-colored surface, rather than by mixed-colored patterns (cohesive effect). Further, surface integration, which is mainly an extrastriate cortical function, was stronger when the same eye viewed the same-colored rivalry stimuli. Since the eye-of-origin signature is explicitly represented in V1, these findings together suggest that rivalry is processed along a distributed network including V1 and the extrastriate cortices.     

The Risk-Based View of Trust: A Conceptual Framework

Trust and risk have often been linked in the literature, but their relationship is far from clear. Trust has been used in three different ways — namely, as a perception (subjective trust), as various personal and situational factors that lead to subjective trust (trust antecedents), and as the actions resulting from subjective trust (behavioral trust). We explain how risk is related to these three conceptions of trust. First, we argue that subjective trust and perceived risk are in fact mirror images of each other. Second, we show how behavioral trust can be viewed as risk taking, so that the causal relationship between subjective trust and behavioral trust is similar to that of perceived risk and risk taking. And third, we discuss the role of personal characteristics (such as risk propensity and trust propensity) in the risk–trust relationship. We also develop a number of propositions based on our risk-based view of trust.     

Perceptual space in the dark affected by the intrinsic bias of the visual system

Correct judgment of egocentric/absolute distance in the intermediate distance range requires both the angular declination below the horizon and ground-surface information being represented accurately. This requirement can be met in the light environment but not in the dark, where the ground surface is invisible and hence cannot be represented accurately. We previously showed that a target in the dark is judged at the intersection of the projection line from the eye to the target that defines the angular declination below the horizon and an implicit surface. The implicit surface can be approximated as a slant surface with its far end slanted toward the frontoparallel plane. We hypothesize that the implicit slant surface reflects the intrinsic bias of the visual system and helps to define the perceptual space. Accordingly, we conducted two experiments in the dark to further elucidate the characteristics of the implicit slant surface. In the first experiment we measured the egocentric location of a dimly lit target on, or above, the ground, using the blind-walking-gesturing paradigm. Our results reveal that the judged target locations could be fitted by a line (surface), which indicates an intrinsic bias with a geographical slant of about 12.4 degrees. In the second experiment, with an exocentric/relative-distance task, we measured the judged ratio of aspect ratio of a fluorescent L-shaped target. Using trigonometric analysis, we found that the judged ratio of aspect ratio can be accounted for by assuming that the L-shaped target was perceived on an implicit slant surface with an average geographical slant of 14.4 degrees. That the data from the two experiments with different tasks can be fitted by implicit slant surfaces suggests that the intrinsic bias has a role in determining perceived space in the dark. The possible contribution of the intrinsic bias to representing the ground surface and its impact on space perception in the light environment are also discussed.     

Binocular rivalry and surface-boundary processing

Theoretical and empirical studies show that the visual system relies on boundary contours and surface features (e.g. textures) to represent 3-D surfaces. When the surface to be represented has little texture information, or has a periodic texture pattern (grating), the boundary contour information assumes a larger weight in representing the surface. Adopting the premise that the mechanisms of 3-D surface representation also determine binocular rivalry perception, the current paper focuses on whether boundary contours have a similar role in binocular rivalry. In experiment 1, we tested the prediction that the visual system prefers selecting an image/figure defined by boundary contours for rivalry dominance. We designed a binocular rivalry stimulus wherein one half-image has a boundary contour defined by a grating disk on a background with an orthogonal grating orientation. The other half-image consists solely of the (same orientation) grating background without the grating disk, ie no boundary contour. Confirming our prediction, the predominance for the half-image with the grating disk is approximately 90%, despite the fact that the grating disk corresponds to an area with orthogonal grating in the fellow eye. The advantage of the grating disk is dramatically reduced to about 50% predominance when a boundary contour is added to the background-only half-image at the location corresponding to the grating disk. We attribute this reduced advantage to the formation of a corresponding binocular boundary contour. In experiment 2 the grating background was substituted by a random-dot background in a similar stimulus design. We found that the perceptual salience of the corresponding binocular boundary contours extracted by the interocular matching process is an important factor in determining the dynamics of binocular rivalry. Experiment 3 showed that vertical lines with uneven thickness and spacing as the background reduce the contribution of the monocular boundary contour of the grating disk in binocular rivalry, possibly through the formation of binocular boundary contours between the local edges (vertical components) of the vertical lines and the corresponding grating disk.     

PAPP-A水平及IVS6+95多态性在预测PCI术后再狭窄的价值

对超敏C反应蛋白(hs-CRP)、妊娠相关蛋白A(PAPP-A)及IVS6+ 95 (C/G)基因多态性预测不稳定型心绞痛(UAP)患者经皮冠状动脉成形术(PCI)术后再狭窄的意义进行探讨.UAP患者行PCI术(TIMI血流达到3级),3个月～9个月复查冠脉造影,选取血管腔内径狭窄≥75％者(再狭窄组)86例、无再狭窄组(对照组)152例,测定术前术后24 hPAPP-A、hs-CRP水平.采用基因测序法分析IVS6+ 95多态性.再狭窄组术后血清PAPP-A、hs-CRP水平较本组术前明显增高(P＜0.001).对照组术后血清PAPP-A、hs-CRP水平较本组术前明显下降(P＜0.001).再狭窄组IVS6+ 95中CC基因频率明显高于未发生组(P＜0.05),而等位基因C频率无明显差异.PCI术后PAPP-A、hs-CRP血清水平可作为预测冠脉再狭窄的指标,IVS6+95(C/G)多态性可能与术后再狭窄有关,其中基因型CC是致病的基础.     

Psychiatric Distress and Suicidal Tendencies in Adult Cancer Survivors: Verifying the Validity of the Brief Symptom Inventory-18 for Identifying Suicidal Ideation in the Hospitalized Population of Mainland China

The Brief Symptom Inventory-18 (BSI-18) is widely used to assess psychiatric distress but has not been verified in the Chinese population. From March to April 2019, 293 hospitalized cancer patients, aged 20–87, completed the cross-sectional survey with demographics questionnaire, BSI-18, and PHQ-9. We analyzed the single suicide-related item of PHQ-9 with the full score clinical outpoint for BSI-18 and PHQ-9 using SPSS 22.0 and R 2.15, including Pearson's χ² test and ROC curve analyses. A Pearson's χ² test was carried out to compare the three different methods with the gold screening criteria. The p-value was correspondingly to .006, .066, .838. When the PHQ-9?≥?10 criteria for the BSI-18, receiver operating characteristic analysis revealed that AUC values were 0.839, optimal cut-off points for both BSI-18?≥?50, the sensitivity of 85.8%, and 62.5%, respectively. The BSI-18 is suitable for a screening tool for psychological distress and could also be used in clinical settings for preliminary screening of hospitalized cancer patients.

     

Grand Theft Auto IV comes to Singapore: effects of repeated exposure to violent video games on aggression

Given the increasingly dominant role of video games in the mainstream entertainment industry, it is no surprise that the scholarly debate about their impact has been lively and well attended. Although >100 studies have been conducted to examine the impact of violent video games on aggression, no clear consensus has been reached, particularly in terms of their long-term impact on violent behavior and aggressive cognitions. This study employs a first-ever longitudinal laboratory-based experiment to examine longer-term effects of playing a violent video game. One hundred thirty-five participants were assigned either to the treatment condition where they played a violent video game in a controlled laboratory setting for a total of 12 hours or to the control group where they did not play a game. Participants in the treatment group played Grand Theft Auto IV over a period of 3 weeks and were compared with a control group on the posttest measures of trait aggression, attitudes toward violence, and empathy. The findings do not support the assertion that playing a violent video game for a period of 3 weeks increases aggression or reduces empathy, but they suggest a small increase in proviolence attitudes. The implications of the findings are discussed.