认知诊断CAT中项目曝光控制方法的比较

项目曝光率关系到题库建设和测验安全,是计算机化自适应测验(Computerized Adaptive Testing, CAT)需要考虑的重要问题。在认知诊断 CAT 情形下,首先基于传统 CAT 中 a-分层方法的思想提出按项目信息量对题库分层的分层多阶段(Stratified Multistage, SM)选题方法;然后将 SM 方法与项目合格(Item Eligibility, IE)方法相结合得到SMIE方法。在此基础上,开展模拟研究比较SM、IE、SMIE、最大修正优先指标(Maximum Modified Priority Index, MMPI)方法、限制阈值(Restrictive Threshold, RT)方法和限制进度(Restrictive Progressive, RPG)方法的选题表现。总体上,它们的测量精度从高到低依次为IE、SM、SMIE、RT、RPG和MMPI方法;项目曝光分布均匀性的优劣次序为MMPI、RPG、SMIE、RT、SM和IE方法;SMIE和RT方法能较好地平衡测量精度和项目曝光均匀性要求。     

Outcome expectations and work design characteristics in post-retirement work planning

Today, a growing number of individuals decide to work beyond normal retirement age (Eurofound, 2012). Research has revealed influencing factors for post-retirement work at the individual, job and organizational, family, and socioeconomic levels. However, not much is known about post-retirement work planning and its antecedents. The purpose of this study is to examine the effects of outcome expectations regarding post-retirement work and two work design characteristics (i.e., physical demands and social support at work) on post-retirement work planning by applying the framework of social cognitive career theory (SCCT; Lent, Brown, & Hackett, 1994). Data from 1065 employees of a German logistics company were used in this study. Results provide support for SCCT to be a suitable theoretical framework for understanding post-retirement career planning and thereby expand the application of SCCT to a new field. Furthermore, multilevel analysis revealed that physical demands were negatively related to the intention to continue to work for the pre-retirement employer after retirement entry, whereas social support at work strengthened the relationship between outcome expectations and same-employer-post-retirement work intention. Organizations who want their retired employees to continue to work in retirement should develop interventions to strengthen post-retirement work outcome expectations. An increase in social support at work as well as a reduction in physical demands may also contribute to increased participation in continued work with the same employer in retirement.     

Establishing a trait anxiety threshold that signals likelihood of anxiety disorders

Abstract

Evidence suggests that the State Trait Inventory for Cognitive and Somatic Anxiety (STICSA) may be a more pure measure of anxiety than other commonly used scales. Further, the STICSA has excellent psychometric properties in both clinical and nonclinical samples. The present study aimed to extend the utility of the STICSA – Trait version by identifying a cut-off score that could differentiate a group of clinically diagnosed anxiety disorder patients (n=398) from a group of student controls (n =439). Two receiver operating characteristic curve analyses indicated cut-off scores of 43 (sensitivity=.73, specificity=.74, classification accuracy=.74) and 40 (sensitivity=.80, specificity=.67, classification accuracy=.73), respectively. In a large community sample (n =6685), a score of 43 identified 11.5% of individuals as probable cases of clinical anxiety, while a score of 40 identified 17.0% of individuals as probable cases of clinical anxiety. As a result of differences in sensitivity and specificity, the present findings suggest a cut-off score of 43 is optimal to identify probable cases of clinical anxiety, while a cut-off score of 40 is optimal to screen for the possible presence of anxiety disorders.     

Treating Survivors of Terrorism While Adversity Continues

Abstract

The current situation in Israel of continuous terrorist attacks poses unique challenges to the treatment of Posttraumatic Stress Disorder (PTSD). This article addresses issues that arise when treating survivors of ongoing terrorism. These include: (a) Is PTSD treatable during ongoing adversity? (b) When should treatment be offered? (c) Is avoidance maladaptive or adaptive? (d) How does one deal with re-exposure? (e) How to define the end of treatment? and (f) What are the effects on the therapist when conducting treatment during ongoing adversity? Case studies are provided to illustrate these issues when treating clients with PTSD during ongoing terror.     

PTSD Severity and Cognitive Reactions to Trauma Among a College Sample

ABSTRACT

Two hundred twenty-one undergraduate education students were assessed to determine trauma history and cognitive responses to traumatic events. Participants completed a demographic questionnaire, the Cognitive Distortions Scale, and the PTSD Symptom Scale (for those reporting a trauma history). The most common types of traumatic events were domestic violence, natural disasters, and severe transportation accidents. Differences in cognitive distortions of individuals with and without a trauma history also were assessed. Individuals with a trauma history were significantly higher on Preoccupation with Danger and Self-Blame subscales. Number of previous traumatic events and the subscale of Preoccupation of Danger significantly predicted PTSD severity.     

Event Centrality,Posttraumatic Cognitions,and the Experience of Posttraumatic Growth

This study tested the extent to which negative appraisals following traumatic events and the centrality of traumatic events predicted posttraumatic growth (PTG; Tedeschi &; Calhoun, 1996 Tedeschi, R. G. and Calhoun, L. G. 1996. The posttraumatic growth inventory: Measuring the positive legacy of trauma. Journal of Traumatic Stress, 9: 76–80. [Crossref] , [Google Scholar]). Participants were 405 undergraduates at a Midwestern university who reported experiencing at least one traumatic event. Regression analyses indicated that the centrality of the event was a significant predictor for all five domains of PTG. Negative appraisals of the world were related to some domains of growth, but neither negative cognitions about the self nor self-blame was a significant predictor of any of the growth domains. Interpretation of these results is considered in light of the consistencies with Janoff-Bulman's (2004) Janoff-Bulman, R. 2004. Posttraumatic growth: Three explanatory models. Psychological Inquiry, 15: 30–34. [Crossref], [Web of Science ®] , [Google Scholar] explanatory models of development of PTG.     

When do ratings implicate perception versus judgment? The “overgeneralization test” for top-down effects

ABSTRACT

When looking at an object—say, a banana—we can both directly perceive its visual qualities (e.g., its size) and also make higher-level judgments about its visual and non-visual properties (e.g., not only its size, but also its cost). Suppose you obtain a rating of a property such as size. Does that rating implicate seeing or merely higher-level judgment? The answer often matters a great deal -- e.g., determining whether such ratings imply “top-down” effects of cognition on perception. Too often, however, this distinction is ignored in empirical investigations of such effects. Here we suggest a simple test for when such ratings can be used to implicate perception: whenever the very same experiment “overgeneralizes” to an unambiguously non-perceptual factor, the results cannot be used to draw implications about perception, per se. As a case study, we investigate an empirical report alleging that conservatives perceive Barack Obama as darker skinned than liberals do. Two simple experiments show that the very same effects, measured via the same “representativeness” ratings, obtain with unambiguously non-perceptual and even silly factors (involving bright red horns vs. halos, rather than brightness differences). We suggest that this renders such methods unable to implicate visual processing and we recommend that “overgeneralization tests” of this type always be conducted in such contexts.     

From a fixation on sports to an exploration of mechanism: The past,present, and future of hot hand research

We review the literature on the hot hand fallacy by highlighting the positive and negative aspects of hot hand research over the past 20 years, and suggesting new avenues of research. Many researchers have focused on criticising Gilovich et al.'s claim that the hot hand fallacy exists in basketball and other sports, instead of exploring the general implications of the hot hand fallacy for human cognition and probabilistic reasoning. Noting that researchers have shown that people perceive hot streaks in a gambling domain in which systematic streaks cannot possibly exist, we suggest that researchers have paid too much attention to investigating the independence of outcomes in various sporting domains. Instead, we advocate a domain-general mechanistic approach to understanding the hot hand fallacy, and conclude by suggesting approaches that might refocus the literature on the important general implications of the hot hand fallacy for human probabilistic reasoning.     

Follower need for cognitive closure as moderator of the effectiveness of leader procedural fairness

Leader procedural fairness is an important factor in leadership effectiveness, but the study of the contingencies of its influence is still in its infancy. Addressing this issue we focus on the moderating role of follower need for cognitive closure, the disposition to reduce uncertainty and swiftly reach closure in judgement and decision. We propose that need for closure captures followers sensitivity to the uncertainty-reducing influence of leader procedural fairness. Across three studies designed to yield complementary evidence (two surveys and a scenario experiment), we find support for the hypothesis that perceived leader procedural fairness has a stronger (positive) relationship with leadership effectiveness for followers higher in need for closure. This support is found across a variety of indicators reflecting different aspects of leadership effectiveness: effort and performance, social identification, job satisfaction, and leader evaluations. We discuss how these findings advance our understanding of the uncertainty-reducing role of leader fairness.