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131.
Can Rosenberg’s (1965) Stability of Self Scale (RSSS) capture within-person variability in state self-esteem over time? Whereas prior research found small correlations between the RSSS and temporal self-esteem instability (Kernis, Grannemann, & Barclay, 1989, 1992), we found moderate-to-large correlations. Our meta-analysis of these correlations showed convergent validity, and that studies with time-stamped state self-esteem assessments had higher correlations than those lacking them (Study 1). The RSSS also showed high test–retest reliability (Studies 2 & 3) and high convergent validity with the Labile Self-Esteem Scale (Dykman, 1998; Study 3). Exploratory analyses showed that the RSSS reflects short-term (daily, weekly) fluctuations in state self-esteem, but not long-term (annual) ones. We discuss the RSSS’ efficacy as an efficient state self-esteem instability measure.  相似文献   
132.
Cognitive models propose that both, negative interpretations of ambiguous social situations and ruminative thoughts about social events contribute to the maintenance of social anxiety disorder. It has further been postulated that ruminative thoughts fuel biased negative interpretations, however, evidence is rare. The present study used a multi-method approach to assess ruminative processing following a social interaction (post-event processing by self-report questionnaire and social rumination by experience sampling method) and negative interpretation bias (via two separate tasks) in a student sample (n?=?51) screened for high (HSA) and low social anxiety (LSA). Results support the hypothesis that group differences in negative interpretations of ambiguous social situations in HSAs vs. LSAs are mediated by higher levels of post-event processing assessed in the questionnaire. Exploratory analyses highlight the potential role of comorbid depressive symptoms. The current findings help to advance the understanding of the association between two cognitive processes involved in social anxiety and stress the importance of ruminative post-event processing.  相似文献   
133.
134.
The goal of this article is to investigate how human participants allocate their limited time to decisions with different properties. We report the results of two behavioral experiments. In each trial of the experiments, the participant must accumulate noisy information to make a decision. The participants received positive and negative rewards for their correct and incorrect decisions, respectively. The stimulus was designed such that decisions based on more accumulated information were more accurate but took longer. Therefore, the total outcome that a participant could achieve during the limited experiments’ time depended on her “decision threshold”, the amount of information she needed to make a decision. In the first experiment, two types of trials were intermixed randomly: hard and easy. Crucially, the hard trials were associated with smaller positive and negative rewards than the easy trials. A cue presented at the beginning of each trial would indicate the type of the upcoming trial. The optimal strategy was to adopt a small decision threshold for hard trials. The results showed that several of the participants did not learn this simple strategy. We then investigated how the participants adjusted their decision threshold based on the feedback they received in each trial. To this end, we developed and compared 10 computational models for adjusting the decision threshold. The models differ in their assumptions on the shape of the decision thresholds and the way the feedback is used to adjust the decision thresholds. The results of Bayesian model comparison showed that a model with time-varying thresholds whose parameters are updated by a reinforcement learning algorithm is the most likely model. In the second experiment, the cues were not presented. We showed that the optimal strategy is to use a single time-decreasing decision threshold for all trials. The results of the computational modeling showed that the participants did not use this optimal strategy. Instead, they attempted to detect the difficulty of the trial first and then set their decision threshold accordingly.  相似文献   
135.
The left inferior frontal gyrus (LIFG) is crucially has been found to be involved in syntactic processing of various kinds. This study investigates the cortical effects of two types of syntactic processes: (i) Reconstruction in ellipsis (recovery of left-out material given by context, More people have been to Paris than […] to Oslo), using pseudo-elliptical structures (‘dead ends’) as control (More people have been to Paris than I have). (ii) Reanalysis in the face of structural ambiguity in syntactic ‘garden paths’, where the parser initially assigns an incorrect structure and is forced to reanalyze. Reanalysis and reconstruction require additional syntactic processing and were predicted to increase activation in areas otherwise involved in structural computation: LIFG (BA 44, 45), premotor BA 6, and posterior temporal BA 21, 22. This was borne out. The results showed an interaction effect of the types of construction in all three areas reflecting syntactic processing.  相似文献   
136.
Sik-Yum Lee 《Psychometrika》2006,71(3):541-564
A Bayesian approach is developed for analyzing nonlinear structural equation models with nonignorable missing data. The nonignorable missingness mechanism is specified by a logistic regression model. A hybrid algorithm that combines the Gibbs sampler and the Metropolis–Hastings algorithm is used to produce the joint Bayesian estimates of structural parameters, latent variables, parameters in the nonignorable missing model, as well as their standard errors estimates. A goodness-of-fit statistic for assessing the plausibility of the posited nonlinear structural equation model is introduced, and a procedure for computing the Bayes factor for model comparison is developed via path sampling. Results obtained with respect to different missing data models, and different prior inputs are compared via simulation studies. In particular, it is shown that in the presence of nonignorable missing data, results obtained by the proposed method with a nonignorable missing data model are significantly better than those that are obtained under the missing at random assumption. A real example is presented to illustrate the newly developed Bayesian methodologies. This research is fully supported by a grant (CUHK 4243/03H) from the Research Grant Council of the Hong Kong Special Administration Region. The authors are thankful to the editor and reviewers for valuable comments for improving the paper, and also to ICPSR and the relevant funding agency for allowing the use of the data. Requests for reprints should be sent to Professor S.Y. Lee, Department of Statistics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.  相似文献   
137.
张为威  黄建平  宛小昂 《心理学报》2019,51(11):1219-1228
人们通过整合自身运动信息进行的空间巡航称为路径整合。本研究采用头盔式虚拟现实和分段式虚拟迷宫, 探究个体的预期如何影响其路径整合的准确性。任务要求被试从包含4个或8个路段的外出路径的起点出发, 行经所有路段后到达外出路径的终点, 再从终点直接返回起点。三组被试在实验前接受不同的指导语, 并因此对正确返航距离产生不同的预期。实验结果表明, 个体返回起点的行为反应受到外出路径特点的影响, 而且反应的准确性在实际情形违背预期时比符合预期时更低。这样的研究结果表明, 预期作为一种非感知觉因素而影响人们进行路径整合, 体现了人类路径整合的高度适应性和策略性。  相似文献   
138.
The present study investigates stability and variability as distinct features of state self-esteem change. The amount of variance attributable to stable individual differences, the association between successive self-esteem experiences, and situational and/or person × situation interaction effects were estimated in repeated measures of self-esteem whilst considering measurement invariance. N = 160 adolescents reported momentary self-esteem in an experience sampling study, (i.e., three assessments a day, over a 2-day period). Latent state-trait analysis indicate that change in state self-esteem is a stable process largely determined by interindividual differences in trait self-esteem, while the impact of occasion-specific influences is small. These intrinsic dynamics ensure consistent self-referential experiences. Results reveal experience sampling as a suitable method to track short-term changes of self-esteem.  相似文献   
139.
Objective: This study examined associations between the functioning of youth with type 1 diabetes and their parents, including parenting dimensions as intervening mechanisms. The study adds to the existing literature by focusing on (1) the concept of parental illness intrusiveness; (2) the (understudied) periods of adolescence and emerging adulthood; and (3) maternal and paternal functioning. Design: Questionnaires were completed by 317 patient-mother dyads and 277 patient-father dyads. All patients (aged 14–25) had type 1 diabetes. The hypothesised model was compared to an alternative model using structural equation modelling. Main Outcome Measures: Youth reported on depressive symptoms and treatment adherence; Physicians provided HbA1c-values. Parents reported on illness intrusiveness, depressive symptoms, and their child’s treatment adherence. Patients and parents reported on psychological control and overprotection. Results: The hypothesised path model had a good fit to the data. Parental illness intrusiveness was positively associated with depressive symptoms and both were positively related to overprotection and psychological control. Psychological control was positively related to patients’ depressive symptoms and negatively to treatment adherence. Poorer treatment adherence was associated with worse HbA1c-values. Conclusion: These findings underscore the relevance of parental illness intrusiveness and emphasise the importance of mothers’ and fathers’ roles throughout adolescence and emerging adulthood.  相似文献   
140.
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