《逻辑哲学论》中的真理概念

维特根斯坦在其《逻辑哲学论》中集中讨论了真理概念,他处理这个概念的方式表明了如何理解语言与实在的关系,以及在何种意义上没有否定记号所代表的实在之物。本文从维特根斯坦关于真理符合论的表述是否会遭到弗雷格的批评这个问题入手,对照戴尔蒙德关于维特根斯坦真理概念的解释,给出了自己的解读,按照这种解读,真内在于使用命题的活动。     

Prefrontal cortex and hippocampus subserve different components of working memory in rats

Both the medial prefrontal cortex (mPFC) and hippocampus are implicated in working memory tasks in rodents. Specifically, it has been hypothesized that the mPFC is primarily engaged in the temporary storage and processing of information lasting from a subsecond to several seconds, while the hippocampal function becomes more critical as the working memory demand extends into longer temporal scales. Although these structures may be engaged in a temporally separable manner, the extent of their contributions in the "informational content" of working memory remains unclear. To investigate this issue, the mPFC and dorsal hippocampus (dHPC) were temporarily inactivated via targeted infusions of the GABA(A) receptor agonist muscimol in rats prior to their performance on a delayed alternation task (DAT), employing an automated figure-eight maze that required the animals to make alternating arm choice responses after 3-, 30-, and 60-sec delays for water reward. We report that inactivation of either the mPFC or dHPC significantly reduced DAT at all delay intervals tested. However, there were key qualitative differences in the behavioral effects. Specifically, mPFC inactivation selectively impaired working memory (i.e., arm choice accuracy) without altering reference memory (i.e., the maze task rule) and arm choice response latencies. In contrast, dHPC inactivation increased both reference memory errors and arm choice response latencies. Moreover, dHPC, but not mPFC, inactivation increased the incidence of successive working memory errors. These results suggest that while both the mPFC and hippocampus are necessarily involved in DAT, they seem to process different informational components associated with the memory task.     

Confucian dynamism work values and team performance: A multiple‐level analysis

In this study we clarified the multiple‐level effects of Confucian‐related work values, including self‐discipline and interpersonal ethics, on the performance of individuals and the team. Empirical data of 70 work teams with 472 team members from Taiwanese enterprises were collected to test our hypotheses. Results showed that, at the group level, shared team values of interpersonal ethics were positively related to team performance through the partial mediation of team cooperation. For cross‐level effect, shared team values of interpersonal ethics and individual member's self‐discipline values were both positively related to individual performance. The implications of Confucian dynamism work values on contemporary organizational management and indigenous Chinese team theories were provided.     

Effect of strain rate on the compressive behaviour of a Zr56Al10.9Ni4.6Cu27.8Nb0.7 bulk metallic glass

We report the study of the effect of strain rate on the compressive behaviour of a Zr₅₆Al_10.9Ni_4.6Cu_27.8Nb_0.7 bulk metallic glass. The results indicated that both the strength and plasticity of the glass increase with increasing the strain rate up to 10^?5 s^?1, above which the strength and plasticity start to decrease. The enhanced mechanical properties under a strain rate of 10^?5 s^?1 are due to the emission/propagation rate of the shear bands being consistent with the strain rate.     

药物认知增强剂使用的伦理思辨

为提升专注力、记忆力等认知能力,健康人群以“超说明书用药”方式摄入延缓衰老或修复脑损伤造成的认知能力衰退的药品。该种认知增强技术的应用需要通过“伦理之前”的技术可行性审核和“技术之后”的生命伦理辨析才能初步确认其道德容许性。目前针对药物认知增强剂使用的担忧主要来自新药的疗效与风险尚不明确、市场主导下的药物获取渠道难以管控,以及亟待完善的社会规范。因此,当下药物认知增强技术的合理应用需强化政府对个体和商业力量的监管,重视经验数据的获取,以及科研机构对用药风险性的进一步研究与科学指导。

     

The Heterogeneity of Truancy among Urban Middle School Students: A Latent Class Growth Analysis

This longitudinal study explores heterogeneity of middle school students by identifying subgroups of youth characterized by distinct truancy trajectories and by determining disability profiles that distinguish these subgroups. Participants comprised an entire 7th through 9th grade student population, with approximately 58,000 students, in a large urban school district. Latent class growth analysis was used to identify subgroups of truant youth. This analysis yielded five distinct truant subgroups: Very-Low (37 %), Low (43.4 %), Declining (3.3 %), Rising (12.8 %), and Chronic (3.6 %). Further, differential disability profiles were found in each subgroup with the control of demographic characteristics (i.e., gender, race/ethnicity, free/reduced lunch, Limited English Proficiency, grade, and prior school absences), students with serious emotional disturbance and learning disabilities demonstrated amplified risks of being classified in the Chronic or Rising subgroups, which show chronic or incremental upward truant trajectories over time. These findings are discussed in terms of their implications for future research.     

Nostalgia's fulfillment of agentic and communal needs: How different types of self‐concepts shape consumer attitudes toward nostalgia

This research investigates how consumers' different types of self‐concepts (agentic vs. communal) shape their attitudes toward nostalgia. Experiment 1, using a two (self‐concept: agentic vs. communal) by two (nostalgia: nostalgic vs. non‐nostalgic) between‐subjects design and a series of multivariate analysis of variance and Hayes's PROCESS Model 8, showed that agentic and communal participants' preference was not increased in the non‐nostalgic condition but was increased in the nostalgic condition. Self‐concept indirectly influenced participants' preference for the nostalgic product through different functions of nostalgia; Agentic participants' likelihood of buying a nostalgic product and recommending it to others increased through enhanced self‐positivity, whereas communal participants' likelihood of buying a nostalgic product and recommending it to others increased through enhanced social connectedness. In Experiment 2, these results were replicated in the context of a public education campaign, and participants' chronic self‐concepts were measured. Participants with different chronic self‐concept tendencies were randomly assigned to nostalgic or non‐nostalgic conditions and were asked to indicate their attitudes toward the campaign. As in Experiment 1, a series of regression and Hayes' PROCESS Model 8 revealed that agentic and communal participants' attitudes were not enhanced in the non‐nostalgic condition but were enhanced in the nostalgic condition. Agentic (communal) individuals' favorability toward the nostalgic message about advocacy increased through enhanced self‐positivity (social connectedness). It appears that consumers with different self‐concepts (agentic vs. communal) experience enhanced feelings relevant to their self‐concepts (self‐positivity vs. social connectedness) when presented with nostalgic appeals for an object, and these heightened feelings drive an increased preference for it. Copyright © 2016 John Wiley & Sons, Ltd.     

Family mental health during the COVID-19 pandemic: Changes in parent-adolescent internalizing symptoms in the United States

The current paper examined the temporal linkage of internalizing symptoms among parent-adolescent dyads during the beginning of the COVID-19 pandemic, and whether COVID-19-related concerns were associated with parent-adolescent linkage of symptoms. Using a 5-week survey-based study, parent-adolescent dyads filled out weekly surveys measuring COVID-19 concerns and internalizing symptoms. Parent and adolescent depressive symptoms did not change over time; however, adolescents experienced decreases in anxiety. Parent-adolescent dyads exhibited linkage in depressive symptoms but not anxiety symptoms. However, linkage in anxiety symptoms varied by parent's COVID-related stress. Study findings provide insight into how COVID-19 disruptions impacted family well-being during adolescence.     

Group Treatment with French-Speaking African Survivors of Torture and Its Effects on Clinical Engagement: Can Hope Be Operationalized?

This study examines the clinical engagement of French-speaking African survivors of torture by measuring how often they utilize adjunctive programmatic services (i.e., mental health, social, and legal services) in relation to their involvement with the Francophone support group. Thirty-two clients who attended at least five Francophone group therapy sessions were identified and matched with their counterparts who never attended the Francophone group. We compared the number of services the clients in the Francophone group and the control group utilized, controlling for the number of services the clients utilized before attending the Francophone group. We found that the Francophone group showed significantly greater overall programmatic engagement. For the types of services utilized, the Francophone group sought out more mental health services, but there was no significant difference in social and legal services. These findings suggest that involvement with the Francophone group can be linked to increased levels of programmatic engagement.     

Relationship Between the Supervisory Working Alliance and Outcomes: A Meta‐Analysis

This study investigated the relationships between the supervisory working alliance and supervision outcome variables using meta‐analysis. The authors reviewed 27 articles, dissertations, and theses published between 1990 and 2018. The authors used the MIX program to calculate the meta‐analyses. The results indicate that the supervisory working alliance is positively related to supervision outcome variables. Supervisees’ perceived relationship with the supervisor was positively related to the relationship with the client. This shows that the phenomenon of isomorphism is a repeated pattern in the relationships in supervision and counseling. The authors discuss the limitations and implications.