Bistable perception in normal aging: perceptual reversibility and its relation to cognition

The effects of age on the ability to resolve perceptual ambiguity are unknown, though it depends on frontoparietal attentional networks known to change with age. We presented the bistable Necker cube to 24 middle-aged and OAs (older adults; 56–78 years) and 20 YAs (younger adults; 18–24 years) under passive-viewing and volitional control conditions: Hold one cube percept and Switch between cube percepts. During passive viewing, OAs had longer dominance durations (time spent on each percept) than YAs. In the Hold condition, OAs were less able than YAs to increase dominance durations. In the Switch condition, OAs and YAs did not differ in performance. Dominance durations in either condition correlated with performance on tests of executive function mediated by the frontal lobes. Eye movements (fixation deviations) did not differ between groups. These results suggest that OAs’ reduced ability to hold a percept may arise from reduced selective attention. The lack of correlation of performance between Hold and executive-function measures suggests at least a partial segregation of underlying mechanisms.     

道歉在信任修复中的作用:来自元分析的证据

采用元分析方法对道歉的信任修复效果进行探讨。通过中英文献检索,共有18篇文献36个独立样本符合元分析标准(N=4731)。元分析的结果表明,道歉在信任修复中起到一定促进作用,呈中等效应量(d=0.44)。调节效应检验发现,信任违背类型的调节作用显著,相比于诚实型信任违背,道歉对能力型信任违背有较好的修复效果。此外,控制组设置对道歉的信任修复效果具有显著的调节作用,以沉默为控制组的信任修复效果优于以否认为控制组的信任修复效果。信任类型、道歉所包含的成分以及测量工具的调节作用均不显著。     

拟人化:从“它”到“他”

拟人化是将人类特征、动机、意向或心理状态赋予非人对象的心理过程或者个体差异。拟人化的产生受到激发主体知识、效能动机和社会动机的影响,现有研究包括对自然、超自然、动物、机器、品牌和产品等的拟人化。对自然的拟人化能够促进环境保护行为,对动物、机器、品牌和产品的拟人化则形式多样、后果复杂。未来研究的焦点可能在人-机器人交互以及拟人化与可爱的关系问题上。     

Effect of post-encoding emotion on recollection and familiarity for pictures

Although prior studies have examined the effect of post-encoding emotional arousal on recognition memory for words, it is unknown whether the enhancement effect observed on words generalizes to pictures. Furthermore, prior studies using words have showed that the effect of emotional arousal can be modulated by stimuli valence and delay in emotion induction, but it is unclear whether such modulation can extend to pictures and whether other factors such as encoding method (incidental vs. intentional encoding) can be modulatory. Five experiments were conducted to answer these questions. In Experiment 1, participants encoded a list of neutral and negative pictures and then watched a 3-min neutral or negative video. The delayed test showed that negative arousal impaired recollection regardless of picture valence but had no effect on familiarity. Experiment 2 replicated the above findings. Experiment 3 was similar to Experiment 1 except that participants watched a 3-min neutral, negative, or positive video and conducted free recall before the recognition test. Unlike the prior two experiments, the impairment effect of negative arousal disappeared. Experiment 4, where the free recall task was eliminated, replicated the results from Experiment 3. Experiment 5 replicated Experiments 1 and 2 and further showed that the impairment effects of negative arousal could be modulated by delay in emotion induction but not by encoding method or stimuli valence. Taken together, the current study suggests that the enhancement effect observed on words may not generalize to pictures.     

Hierarchical Structure and Cross-Cultural Measurement Invariance of the Norwegian Version of the Personality Inventory for DSM–5

The Personality Inventory for DSM–5 (PID–5) was created to aid a trait-based diagnostic system for personality disorders (PDs) in the Diagnostic and Statistical Manual of Mental Disorders (5th ed. [DSM–5]; American Psychiatric Association, 2013a American Psychiatric Association. (2013a). Diagnostic and statistical manual of mental disorders (5th ed.). Washington, DC: Author.[Crossref] , [Google Scholar]). In this study, we aimed to evaluate the Norwegian version of the PID–5 by examining its score reliability, hierarchical structure, congruency with international findings, and cross-cultural measurement invariance with a matched U.S. sample. For this purpose, 503 university students (76% females) were administered the PID–5. The Norwegian PID–5 showed good score reliability and structural validity from 1 to 5 factors. The 5-factor structure was generally congruent with international findings, and support for measurement invariance across the Norwegian and a matched U.S. sample was found. Conclusively, the results indicate that scores on the Norwegian PID–5 have sound psychometric properties, which are substantially comparable with the original U.S. version, supporting its use in a Norwegian population.     

1993~2013年常驻高海拔地区军人心理健康状态的横断历史研究

研究为探索常驻高海拔地区军人心理健康水平如何随社会年代变迁而改变,运用了横断历史元分析的方法,对1993年至2013年38篇采用90项症状自评量表(SCL-90)的文献调查数据进行分析,考察了11454名常驻高海拔地区军人在该量表上9个因子得分随年代变化的趋势.结果发现:(1)SCL-90的7个因子均值与年代负相关,且不受期刊类型等的影响.20年来,7个因子下降了5%~15%不等.其中,强迫变化最大,抑郁、焦虑、人际敏感、偏执和精神病性均变化明显.这说明,常驻高海拔地区军人心理健康虽有所波动但整体水平逐步提升,变化幅度大致属于中等程度.(2)当年军费占GDP比值、居民消费水平指数与SCL-90部分因子均值负相关显著;5年前的居民消费水平指数与7个因子显著负相关.这说明,国防建设的经济投入和居民消费水平可能是影响常驻高海拔地区军人心理健康水平的重要因素.     

违规和违法行为责任归咎的身份效应——基于官员、富人与普通人间的比较分析

为探讨违规和违法事件中,旁观者对不同社会身份行为者的责任归咎是否具有一致性,研究要求被试对三组不同身份匹配条件下(官员/普通人、富人/普通人以及官员/富人)的违规和违法行为进行责任归咎,结果发现,无论是对违规行为,还是对违法行为,人们对具有官员身份的行为者的责任归咎最为严苛,对具有富人身份的行为者的责任归咎其次,而对既非官员也非富人的普通人的责任归咎则相对宽容,因而责任归咎中具有明显的身份效应。     

胰岛素研究的新突破

人类与糖尿病抗争的历史最早可上溯到公元前1500年前,但直到20世纪20年代胰岛素才由生理学家Fredrick Banting等发现.自此,挽救了数以百万计的糖尿病患者的生命.随后,人们在研究胰岛素如何调节物质代谢时,意外发现含胰岛素的激化液(Glucose-insulin-potassium,GIK)可改善急性心脏梗死患者的症状.提示,胰岛素还具有其它多方面的生理功能.近期研究证明,胰岛素确有抗心肌坏死与凋亡、进而保护缺血再灌注心肌的作用,这再次引起了人们对胰岛素进行深入研究的兴趣.从胰岛素的发现到对其新的作用机制的认识给我们带来许多有益的启示.