On axiomatizations of public announcement logic

In the literature, different axiomatizations of Public Announcement Logic (PAL) have been proposed. Most of these axiomatizations share a “core set” of the so-called “reduction axioms”. In this paper, by designing non-standard Kripke semantics for the language of PAL, we show that the proof system based on this core set of axioms does not completely axiomatize PAL  without additional axioms and rules. In fact, many of the intuitive axioms and rules we took for granted could not be derived from the core set. Moreover, we also propose and advocate an alternative yet meaningful axiomatization of PAL  without the reduction axioms. The completeness is proved directly by a detour method using the canonical model where announcements are treated as merely labels for modalities as in normal modal logics. This new axiomatization and its completeness proof may sharpen our understanding of PAL  and can be adapted to other dynamic epistemic logics.     

Revised Space Fortress: A validation study

We describe briefly the redevelopment of Space Fortress (SF), a research tool widely used to study training of complex tasks involving both cognitive and motor skills, to be executed on currentgeneration systems with significantly extended capabilities, and then compare the performance of human participants on an original PC version of Space Fortress (SF) with the revised Space Fortress (RSF). Participants trained on SF or RSF for 10 sets of eight 3-min practice trials and two 3-min test trials. They then took tests involving retention, resistance to secondary task interference, and transfer to a different control system. They then switched from SF to RSF or from RSF to SF for 2 sets of final tests and completed rating scales comparing RSF and SF. Slight differences were predicted on the basis of a scoring error in the original version of SF used and on slightly more precise joystick control in RSF. The predictions were supported. The SF group started better but did worse when they transferred to RSF. Despite the disadvantage of having to be cautious in generalizing from RSF to SF, we conclude that RSF has many advantages, which include accommodating new PC hardware and new training techniques. A monograph that presents the methodology used in creating RSF, details on its performance and validation, and directions on how to download free copies of the system may be downloaded from www .psychonomic.org/archive/.     

Heterosexist discrimination and relational sacrifice of same-sex couples

Drawing on the family stress process model and using data from 141 same-sex couples (N = 282 partners), we examined associations between heterosexist discrimination and relational sacrifices (i.e., willingness and behaviors). We also examined the moderating roles of both partners' internalized homophobia and state-level liberalism on same-sex marriage legalization. Actor-partner interdependence moderation models were conducted. Most of our findings supported hypotheses from the family stress process model. One individual's experiences of greater heterosexist discrimination were related to the partner's higher levels of sacrifice willingness and the individual's own higher frequency of sacrifice behaviors. Such associations emerged (a) among couples living in more liberal states that legalized same-sex marriage earlier, and (b) when the individual's partner reported lower levels of internalized homophobia. Yet the moderating role of an individual's internalized homophobia was the opposite of our hypothesis. When individuals reported high (versus low) internalized homophobia, individuals' experiences of more discriminative events were related to partners' higher levels of sacrifice willingness. Collectively, our study findings highlight that—when investigating how same-sex couples forge and maintain romantic bonds—researchers should consider their experiences in the social cultural context of heteronormativity, which includes the focus on discrimination, stigma, and affirmative laws and policies.     

国内十个地区7—12岁儿童数学概念和运算能力发展的初步研究

本文综合了对我国十个地区959名7—12岁儿童的协作研究结果。探讨了儿童在认数、数序和系列、数的组成、运算和应用等四个方面的发展情况,并对儿童数学概念和运算能力发展中知识学习与数概念发展的关系、发展的过程、环境的影响、发展的阶段性等方面进行了讨论,也谈到了协作方法问题。     

Family Socioeconomic Status and Adolescent Depressive Symptoms: A Moderated Mediation Model

Low family socioeconomic status (SES) is linked with adolescents’ symptoms of depression, but little is known about the mediating and moderating mechanisms underlying this association. Based on ecosystem theory and the organism-environment interaction model, we tested whether emotional resilience mediated the relationship between family SES and depressive symptoms, and whether parent–child relationship quality moderated the relationship. Adolescents (N?=?724) from one middle school in central China completed self-reported questionnaires regarding demographic variables, family SES, emotional resilience, parent–child relationship quality, and depressive symptoms. Regression-based mediation analysis indicated that emotional resilience mediated the association between family SES and depressive symptoms. Parent–child relationship quality moderated two components of this mediation process, namely the effects of low SES on both emotional resilience and depressive symptoms. In both cases, a high quality parent–child relationship ameliorated the adverse effects of low family SES. That is, adolescents with a higher quality relationship with their parent appeared to be less affected by low family SES. The study reveals how and when family SES may affect adolescents’ depressive symptoms, and highlights the protective effect of a high quality parent–child relationship in a low SES environment.

     

Phone follow up to families of COVID-19 patients who died at the hospital: families' grief reactions and clinical psychologists' roles

A proportion of persons affected by coronavirus disease-19 (COVID-19) die and do so in extraordinary circumstances. This can make grief management extremely challenging for families. The Clinical Psychology unit of an Italian hospital offered a bereavement follow-up call to such families. This study aimed to explore the families' experiences and needs collected during these calls, and the role that the psychologists played through the call. A total of 246 families were called over 3 months. Multiple qualitative methods included: (i) written reports of the calls with relatives of patients who died at the hospital for COVID-19; (ii) qualitative semi-structured interviews with psychologists involved in the calls; (iii) observation of psychologists' peer group discussions. A thematic analysis was conducted. Six themes emerged: without death rituals, solitary, unexpected, unfair, unsafe, coexisting with other stressors. Families' reactions were perceived by psychologists as close to a traumatic grief. Families' needs ranged from finding alternative rituals to giving meaning and expressing different emotions. The psychologists played both a social-institutional and a psychological-human role through the calls (e.g., they cured disrupted communication or validated feelings and choices). This study highlighted the potential of traumatic grief of families of COVID-19 victims, and provided indications for supporting them within the space of a short phone call.     

Multilevel Factor Analysis: Reporting Guidelines and a Review of Reporting Practices

We provide reporting guidelines for multilevel factor analysis (MFA) and use these guidelines to systematically review 72 MFA applications in journals across a range of disciplines (e.g., education, health/nursing, management, and psychology) published between 1994 and 2014. Results are organized in terms of the (a) characteristics of the MFA application (e.g., construct measured), (b) purpose (e.g., measurement validation), (c) data source (e.g., number of cases at Level 1 and Level 2), (d) statistical approach (e.g., maximum likelihood), and (e) results reported (e.g., intraclass correlations for indicators and latent variables, standardized factor loadings, fit indices). Results from this review have implications for applied researchers interested in expanding their approaches to psychometric analyses and construct validation within a multilevel framework and for methodologists using Monte Carlo methods to explore technical and methodological issues grounded in realistic research design conditions.     

主动性人格对大学生求职行为影响机制的追踪研究

基于求职自我效能感和就业情境压力感知视角,考察主动性人格对大学生求职行为的影响及其作用机制。采用问卷调查法,在珠三角地区6所高校选取1000名大四学生进行为期6个月的追踪测查,对前、后侧均参加调查的658名被试数据进行统计分析。结果表明:主动性人格对求职行为具有显著的正向促进作用;求职自我效能感在主动性人格与求职行为之间起部分中介作用;就业情境压力正向调节主动性人格与求职行为之间的关系,即感知的就业情境压力越大,主动性人格与求职行为之间的正向关系越强。     

重估测谎决策的Bayes推断试验

谎与非谎的情绪反应没有独立的客观标准,以Polygrapy构成技术的测谎缺乏稳定的效度。本研究尝试运用Bayes方法分析一项实测案例,计算两名被试的低显性测谎反应结果,使准确判决有谎的概率由机会水平50％分别调整到可明确分辩的74％和49％,从决策分析角度为改良测谎程序和提高测谎效率提供了一种新的操作思路。     

6～12岁儿童脑电α波频率分布特点与信息加工速度的关系

本研究以 2 2 8名 6～ 12岁儿童为研究对象 ,采用脑电波超慢涨落分析技术 (简称ET) ,重点探讨了与认知功能有关的α波 ( 8～ 13Hz)的分布特点。研究结果表明 :①α波在全脑 12个脑区的比率 ,因频率成分不同而表现出不同的分布特点 ;②α波在左右对称脑区的分布比率也因频率不同而表现出不同的左右脑优势。除左前颞叶的平均频率显著大于右前颞叶外 ,其他左右脑对称区域的平均频率的差异均不显著。α波平均频率的从高到低依次为枕叶、中央区、顶叶、左前颞叶、后颞叶、额叶、右前颞叶 ;③信息加工速度与α波的关系并不明显 ,快组和慢组被试的 6种频率 ( 8～13Hz)α波的比率均无显著性差异