A temporally distinct role for group I and group II metabotropic glutamate receptors in object recognition memory

Recognition memory, involving the ability to discriminate between a novel and familiar object, depends on the integrity of the perirhinal cortex (PRH). Glutamate, the main excitatory neurotransmitter in the cortex, is essential for many types of memory processes. Of the subtypes of glutamate receptor, metabotropic receptors (mGluRs) have received less study than NMDA receptors; thus, the reported experiments examined the role of mGluRs in familiarity discrimination in the rat PRH. Experiments 1 and 2 assessed the effects of systemic administration of MPEP, a group I mGluR (specifically mGluR5) antagonist, and/or LY341495, a group II mGluR antagonist, on a spontaneous object novelty preference task. Simultaneous antagonism of both group I and II mGluRs impaired familiarity discrimination following a 24-h but not a 15-min delay, while antagonism of either mGluR subtype alone had no effect at either delay. The impairment was in acquisition, as in Experiment 3 coadministration of MPEP and LY341495 did not affect recognition memory performance when administered either after the sample phase or prior to test. The impairment in long-term recognition memory was mediated by mGluRs in the PRH, as localized intracortical antagonism of group I and II mGluRs also produced a deficit (Experiment 4). No evidence was found for an involvement of group III mGluRs in the acquisition of long-term familiarity discrimination (Experiment 5). These findings establish that glutamatergic neurotransmission in the PRH via group I and II mGluRs is crucial for the acquisition, but not for the consolidation or retrieval of long-term object recognition memory.     

自我-他人重叠及其相关概念辨析

在总结自我-他人重叠概念的提出历程、测量方法、结构, 以及常用改变方法的基础上, 通过辨析自我-他人重叠与关系自我、自我扩张之间的关系, 以及它和社会距离之间的异同, 明晰了自我-他人重叠的本质特点。自我-他人重叠是强调自己和他人具有相似表征的关系自我, 是个体在自我扩张动机的驱使下, 将他人的资源、观点和特质纳入自我的结果。未来可以借鉴关系自我神经机制的研究成果来探讨自我-他人重叠的神经机制, 还可以深入探讨过高的自我-他人重叠对亲密关系的消极作用。     

焦虑梦的运作机制研究

综合以往的释梦理论,结合具体案例,对焦虑梦的运作机制进行了探讨,并提出一种结构化的释梦方法.研究结论:焦虑梦的梦境是由多个相似焦虑事件的记忆元素建构而成,并由梦者睡前所体验的"半成功"地压抑了的焦虑感受所触发.通过对构成梦境的记忆元素进行分析整理,能发现做梦者在做梦前一段时期内比较重要的、重复出现的焦虑主题,从而为心理咨询与治疗提供线索.     

Involuntary and voluntary recall of musical memories: A comparison of temporal accuracy and emotional responses

Comparisons between involuntarily and voluntarily retrieved autobiographical memories have revealed similarities in encoding and maintenance, with differences in terms of specificity and emotional responses. Our study extended this research area into the domain of musical memory, which afforded a unique opportunity to compare the same memory as accessed both involuntarily and voluntarily. Specifically, we compared instances of involuntary musical imagery (INMI, or “earworms”)—the spontaneous mental recall and repetition of a tune—to deliberate recall of the same tune as voluntary musical imagery (VMI) in terms of recall accuracy and emotional responses. Twenty participants completed two 3-day tasks. In an INMI task, participants recorded information about INMI episodes as they occurred; in a VMI task, participants were prompted via text message to deliberately imagine each tune they had previously experienced as INMI. In both tasks, tempi of the imagined tunes were recorded by tapping to the musical beat while wearing an accelerometer and additional information (e.g., tune name, emotion ratings) was logged in a diary. Overall, INMI and VMI tempo measurements for the same tune were strongly correlated. Tempo recall for tunes that have definitive, recorded versions was relatively accurate, and tunes that were retrieved deliberately (VMI) were not recalled more accurately in terms of tempo than spontaneous and involuntary instances of imagined music (INMI). Some evidence that INMI elicited stronger emotional responses than VMI was also revealed. These results demonstrate several parallels to previous literature on involuntary memories and add new insights on the phenomenology of INMI.     

The ironic impact of activists: Negative stereotypes reduce social change influence

Despite recognizing the need for social change in areas such as social equality and environmental protection, individuals often avoid supporting such change. Researchers have previously attempted to understand this resistance to social change by examining individuals' perceptions of social issues and social change. We instead examined the possibility that individuals resist social change because they have negative stereotypes of activists, the agents of social change. Participants had negative stereotypes of activists (feminists and environmentalists), regardless of the domain of activism, viewing them as eccentric and militant. Furthermore, these stereotypes reduced participants' willingness to affiliate with ‘typical’ activists and, ultimately, to adopt the behaviours that these activists promoted. These results indicate that stereotypes and person perception processes more generally play a key role in creating resistance to social change. Copyright © 2013 John Wiley & Sons, Ltd.     

Reconciling Historical Injustices: Deliberative Democracy and the Politics of Reconciliation

Deliberative democracy is often celebrated and endorsed because of its promise to include, empower, and emancipate otherwise oppressed and excluded social groups through securing their voice and granting them impact in reasoned public deliberation. This article explores the ability of Habermas’ theory of deliberative democracy to accommodate the demands of historically excluded social groups in democratic plural societies. It argues that the inclusive, transformative, and empowering potential of Habermas’ theory of deliberative democracy falters when confronted with particular types of historical injustices. It falters because it pays little attention to the historical dimension of injustices and the demands to which it gives rise. The historical dimension of longstanding injustices, it is argued, gives rise to a set of distinctive demands, such as collective memory of exclusion, acknowledgement of historical injustices, taking responsibility, and offering apology and reparations for causing these injustices, which go beyond the type of democratic inclusion that is often offered by deliberative democracy. Yet, the solution is not to abandon the model of deliberative democracy. Quite the contrary, it remains a valuable basis for forward-looking political decision making. The article concludes that in order to achieve inclusive, empowering and transformative deliberation in consolidated democracies that have experienced historical injustices, the politics of reconciliation is indispensable.     

Paradoxical Leader Behaviors: Leader Personality and Follower Outcomes

We examined leaders’ Big Five personality traits as the antecedents and followers’ in-role and innovative performance behaviors as outcomes of paradoxical leader behavior (PLB) in people management. We also examined the moderating effect of followers’ psychological capital on PLB and its relationship with followers’ outcomes. We drew on the trait theory of leadership, social learning theory, and the conservation of resources theory to derive our hypotheses. We tested our predictions with a sample of 131 managers and 609 followers. By and large, we found support for our predictions. More specifically, leaders’ traits of extraversion and openness to experience were positively related to followers’ PLB ratings. Conversely, agreeableness, conscientiousness, and neuroticism among leaders were negatively related to followers’ PLB ratings. PLB in turn was positively related to followers’ in-role and innovative performance behaviors. Followers’ psychological capital was found to moderate the relationship between PLB and followers’ in-role performance such that the relationship was stronger when followers’ psychological capital was high than when it was low. The implications of these findings were discussed.     

The Effect of Problem-Solving Based Family Therapy on Emotional Intimacy and Marital Quality of Cultural Couples in Tabriz

Abstract

This study aimed to investigate the effect of problem-solving based family therapy on the emotional intimacy and marital quality of cultural couples in Tabriz. The research method was quasi-experimental by designing the pretest and post-test with the experimental group. The statistical population of this research consisted of all cultural couples with marital problems referring to counseling centers of Tabriz Education in 2019. The research sample based on The Cochran formula consisted of 32 couples that were selected by purposeful sampling and were randomly assigned into two experimental and control groups. The experimental group was exposed to 10 sessions of problem-solving based family therapy and the control group received no interventions. The research tool was the Marital Quality Index and the Intimacy Questionnaire, which was completed by both groups at the beginning and end of the intervention. The collected data were analyzed using SPSS software and inferential statistics of covariance analysis were also investigated. The results of covariance analysis showed that problem-solving based family therapy had a significant impact on the emotional intimacy and marital quality of cultural couples. Therefore, problem-solving based family therapy can be used as a treatment in couples with marital problems.