积极组织学术研究--当代组织管理学中的新运动

积极组织学术研究是管理学中的一项新运动,由密歇根大学商学院倡导建立的积极组织学术研究小组发起。主张发展积极的人类优势,复苏、振兴和激发组织活力,使组织兴旺发达,使其员工迈向成功。研究者将研究重点集中于在组织环境中培养积极的要素,并在研究中构建严谨、系统的理论基础,以期实现组织、员工及研究者的共同发展。     

Grammaticality,Acceptability, and Probability: A Probabilistic View of Linguistic Knowledge

The question of whether humans represent grammatical knowledge as a binary condition on membership in a set of well‐formed sentences, or as a probabilistic property has been the subject of debate among linguists, psychologists, and cognitive scientists for many decades. Acceptability judgments present a serious problem for both classical binary and probabilistic theories of grammaticality. These judgements are gradient in nature, and so cannot be directly accommodated in a binary formal grammar. However, it is also not possible to simply reduce acceptability to probability. The acceptability of a sentence is not the same as the likelihood of its occurrence, which is, in part, determined by factors like sentence length and lexical frequency. In this paper, we present the results of a set of large‐scale experiments using crowd‐sourced acceptability judgments that demonstrate gradience to be a pervasive feature in acceptability judgments. We then show how one can predict acceptability judgments on the basis of probability by augmenting probabilistic language models with an acceptability measure. This is a function that normalizes probability values to eliminate the confounding factors of length and lexical frequency. We describe a sequence of modeling experiments with unsupervised language models drawn from state‐of‐the‐art machine learning methods in natural language processing. Several of these models achieve very encouraging levels of accuracy in the acceptability prediction task, as measured by the correlation between the acceptability measure scores and mean human acceptability values. We consider the relevance of these results to the debate on the nature of grammatical competence, and we argue that they support the view that linguistic knowledge can be intrinsically probabilistic.     

Detectable Neuropsychological Differences in Early Preclinical Alzheimer’s Disease: A Meta-Analysis

The development of methods for in vivo detection of cerebral beta amyloid retention and tau accumulation have been increasingly useful in characterizing preclinical Alzheimer’s disease (AD). While the association between these biomarkers and eventual AD has been demonstrated among cognitively intact older adults, the link between biomarkers and neurocognitive ability remains unclear. We conducted a meta-analysis to test the hypothesis that cognitively intact older adults would show statistically discernable differences in neuropsychological performance by amyloid status (amyloid negative = A-, amyloid positive = A+). We secondarily hypothesized a third group characterized by either CSF tau pathology or neurodegeneration, in addition to amyloidosis (A+/N+ or Stage 2), would show lower neuropsychology scores than the amyloid positive group (A+/N- or Stage 1) when compared to the amyloid negative group. Pubmed, PsychINFO, and other sources were searched for relevant articles, yielding 775 total sources. After review for inclusion/exclusion criteria, duplicates, and risk of bias, 61 studies were utilized in the final meta-analysis. Results showed A+ was associated with poorer performance in the domains of global cognitive function, memory, language, visuospatial ability, processing speed, and attention/working memory/executive functions when compared to A-. A+/N+ showed lower performances on memory measures when compared to A+/N- in secondary analyses based on a smaller subset of studies. Results support the notion that neuropsychological measures are sensitive to different stages of preclinical AD among cognitively intact older adults. Further research is needed to determine what constitutes meaningful differences in neuropsychological performance among cognitively intact older adults.     

Putting Raters in Ratees’ Shoes: Perspective Taking and Assessment of Creative Products

This study reported 2 experiments that studied the effect of perspective taking on assessment of creative products by using human raters. Forty responses of 2 alternative uses tasks (AUTs) and 15 alien stories generated by 6th-grade students were used as assessment materials. Undergraduate students as the novice raters assessed the products under 3 experimental conditions: assessing without any information of the ratees, assessing only with age information of the ratees, and assessing with age information and taking the perspective of the ratees. Results of Experiment 1 showed significant differences in creativity ratings between group 1 and 2. But no significant difference was found between group 2 and 3. In Experiment 2, raters in group 1 used objective perception and raters in group 3 were asked to take the perspective for more time. Raters in group 3 assigned higher ratings than the other 2 groups but no difference was found between group 1 and 2. Overall, the results showed the effect of perspective taking on assessment of creative products. Possible mechanisms of the effect and implications for creativity assessment and creativity teaching practice were discussed.     

Interplay between Attachment to Peers and Parents in Korean Adolescents’ Behavior Problems

The present study investigated the relative contribution of style of peer attachment (secure, anxious, avoidant) and quality of attachment to parents on behavior problems in Korean adolescents. In addition, we examined the role of paternal and maternal attachment separately as a potential moderator in the relationship between style of peer attachment and internalizing and externalizing behavior problems. Middle school students (245 males, 209 females) completed the Korean version of the Adolescent Friendship Attachment Scale, Inventory of Parental and Peer Attachment-Revised, and Youth Self-Report. Attachment to peers and parents as predictors of behavior problems were tested via hierarchical multiple regression analyses. Results revealed that anxious peer attachment remained the strongest predictor of behavior problems among adolescents (internalizing behavior problems β?=?.18, p?<?.01; externalizing behavior problems β?=?.21, p? <?.001), indicating the relative importance of peer relationship compared to attachment to parents. Paternal attachment significantly moderated the relationship between avoidant peer attachment and externalizing behavior problems (β?=?.15, p?<?.05), even when the main effect of avoidant peer attachment on externalizing behavior problems was not significant. Results highlight the role of both attachments to peers and parents on adolescents’ psychological adjustment.     

Stress-Related Growth Experience: Listening to Korean Adolescents who have Visual Impairments

Research suggests that negative life events facilitate stress-related growth, such as the development of coping strategies and restoration skills. In this study, we aimed to capture the characteristics of stress-related growth among Korean adolescents who have visual impairments. Using a constructive grounded theory methodology, three themes were identified as characteristics of stress-related growth experiences: (a) developing meaningful relationships, (b) creating coping strategies, and (c) discovering personal strength. This study indicates that Korean adolescents who had visual impairments developed their own coping strategies to deal with various stressors and increased their awareness of their inner strengths and talents. It also suggests that challenging life circumstances may provide opportunities for Korean adolescents who have visual impairments to experience emotional wellbeing.     

Dialectical Behavior Therapy Skills for Families of Individuals With Behavioral Disorders: Initial Feasibility and Outcomes

Family members of individuals with behavioral disorders are a valuable source of logistical and emotional support for patients. Family members may take on tremendous financial and/or psychological responsibility to care for their loved ones, which can result in poor psychological outcomes for the family and, in turn, impede the recovery of the patient. Dialectical Behavior Therapy (DBT) skills training is an effective treatment that has been utilized with numerous populations, including family members of individuals with behavioral problems, and has shown efficacy in improving various interpersonal outcomes; however, no study has examined feasibility and outcomes of delivering all four unabridged DBT skills modules to this population. Twenty participants attended weekly DBT skills classes for 6 months, where they acquired skills in mindfulness, emotion regulation, interpersonal effectiveness, and distress tolerance. There were significant pre-post improvements for emotion dysregulation, stress reactivity, and various interpersonal outcomes; there were no significant changes in depression or anxiety. These results suggest that DBT skills may be effective at improving broad clinical domains in a sample of family members of individuals with behavioral problems. This research is the first step in demonstrating that DBT skills might benefit family members of patients with heterogeneous mental health problems and, therefore, fits in to the field’s growing interest in cost-effective transdiagnostic interventions.     

Clinician competencies: Strengths and limitations for work with transgender and gender non-conforming (TGNC) clients

Individuals who identify as transgender or gender nonconforming (TGNC) face a number of health disparities compared to individuals who identify as cisgender (those who self-identify with the sex they were assigned at birth). For example, TGNC individuals experience heightened rates of clinical depression, anxiety, general psychological distress, suicidal ideation, and suicide attempts. Despite these troubling disparities, many TGNC individuals report hesitance to seek mental health services due to concerns regarding culturally insensitive or even overtly discriminatory services from providers. In addition to decreasing service utilization among TGNC populations, discriminatory services impair intervention effectiveness even when TGNC individuals persist in seeking mental health services. The American Psychological Association (APA) and the World Professional Association for Transgender Health (WPATH) provide guidelines for culturally competent work with TGNC clients; however, research indicates a profound lack of TGNC-specific training and resources among mental health care providers. To address this gap, the present investigation utilized a mixed-method design to assess training experiences, understanding of terminology, and TGNC competence among mental health care providers at various training levels. Participants were current mental health clinicians across the United States. Implications for improving reported and demonstrated weaknesses are discussed.     

Magic Learning Pill: Ontological and Instrumental Learning in Order to Speed Up Education

The purpose of this research is to investigate the phenomenology of learning — people”s attitudes toward their learning experiences that have inherent worth in themselves (i.e., ontological learning) or have value outside of the learning itself (i.e., instrumental learning). In order to explore this topic, 58 participants from the U.S., Russia, and Brazil were interviewed with a central question derived from the science fiction writer Isaac Asimov’s short story “Profession”: whether participants would take a “Magic Learning Pill” (MLP) to avoid the process of learning, and instead magically acquire the knowledge. The MLP would guarantee the immediate learning by skipping the process of learning while achieving the same effect of gaining skills and knowledge. Almost all participants could think of some learning experiences for which they would take MLP and others for which they would not. Many participants would not take MLP for ontological learning, which is learning experiences that have inherent value for the people, while they would take MLP for instrumental learning, which is learning that mainly serves some other non-educational purposes. The main finding suggests that both instrumental and ontological types of learning are recognized by a wide range of people from diverse cultures as present and valued in their lives. This is especially significant in light of the overwhelmingly instrumental tone of public discourse about education. In the context of formal education, ontological learning was mentioned 35 times (28.0%) while instrumental learning was mentioned 74 times (60.2%). Although ontological learning was often mentioned as taking place outside of school, incorporating pedagogy supporting ontological learning at school deserves consideration.     

胆囊收缩素对脂多糖诱发的病态行为及外周细胞因子的影响

细胞因子在病态行为的产生中有重要的作用。八肽胆囊收缩素在前人研究中表明能够拮抗脂多糖在大鼠体内引起的细胞因子的分泌。实验目的：利用八肽胆囊收缩素的抗炎作用研究细胞因子在病态行为中的作用。实验方法：共分两个实验进行, 将大鼠分为控制组、免疫激活剂脂多糖组(200 μg/kg剂量, 腹腔注射)以及注射不同剂量的八肽胆囊收缩素的实验组(分别为20 μg/kg 、40 μg/kg 、80 μg/kg 和120 μg/kg剂量), 各实验组在注射脂多糖前半小时注射相应剂量的八肽胆囊收缩素, 药物注射两小时后进行行为实验 (糖水摄取量测验、旷场测验和高架十字迷宫测验), 然后对大鼠前炎性细胞因子包括白细胞介素-1β(IL-1β)、白细胞介素-6 (IL-6)、肿瘤坏死因子-α (TNF-α)及抗炎性细胞因子白细胞介素-10(IL-10)的血清浓度进行分析。实验结果：脂多糖诱发大鼠产生病态行为, 与控制组相比, 脂多糖组糖水摄取量降低, 旷场测验中活动性降低, 高架闭臂进入次数减少; 脂多糖诱导炎性细胞因子分泌增加, 与控制组相比, 脂多糖组前炎性细胞因子IL-1β、IL-6、TNF-α的分泌增加。在脂多糖注射前注射八肽胆囊收缩素能够抑制前炎性细胞因子IL-1β、IL-6、TNF-α的分泌, 但八肽胆囊收缩素未能改善免疫诱导的病态行为。结论：本实验结果表明仅改变外周的细胞因子浓度并不能完全改变动物的病态行为, 病态行为的产生可能与脑区的细胞因子有更大的联系。