纵向数据的中介效应分析

目前中介效应检验主要是基于截面数据,但许多时候截面数据的中介分析不适合进行因果推断,因而需要收集历时性的纵向数据,进行纵向数据的中介分析。评介了基于交叉滞后面板模型、多层线性模型和潜变量增长模型的纵向数据的中介分析方法及其四个发展。第一,中介效应随时间变化,如连续时间模型、多层时变系数模型。第二,中介效应随个体变化,如随机效应的交叉滞后面板模型和多层自回归模型。第三,中介模型的整合,如交叉滞后面板模型与多层线性模型整合为多层自回归模型。第四,中介检验方法的发展,建议使用Monte Carlo、Bootstrap和贝叶斯法进行纵向数据的中介分析。总结出一个纵向数据的中介分析流程并给出相应的Mplus程序。随后展望了纵向数据的中介分析的拓展方向。     

复杂目标实现过程中进展感知与努力的因果关系：基于潜在差分模型的分析

长期、多任务复杂目标实现过程中,个体如何依据过往进展来调节未来努力付诸程度,一直是工业与组织心理学中有争议的话题之一。本研究以创业活动作为研究背景,以PESD数据库中215名创业者为研究对象,构建潜在差分模型对连续5年的创业进展感知与创业努力的客观数据进行分析。结果显示,进展感知和努力间呈现互动式因果关系：前一期努力程度能够预测下一期进展感知的增加,但前一期进展感知却使得下一期努力程度减弱。     

Religious Commitment's Moderating Effect on Refugee Trauma and Growth

The authors assessed religious commitment's moderating effect on the relationship between posttraumatic stress disorder and posttraumatic growth (PTG) in adult Liberian refugees who experienced trauma from war (N = 444). Results indicated that religious commitment predicted PTG and had an interaction effect on the relationship between trauma and PTG, albeit a negative one. Counselors should therefore gauge clients’ worldviews in terms of religion or spirituality before integrating spiritual or religious issues in therapy.     

童年中晚期孤独感的发展轨迹：一项潜变量增长模型分析

使用问卷法和同伴提名法对884名小学二年级学生进行历时三年的四次追踪测试, 采用潜变量增长模型建模, 检验小学2~5年级学生孤独感的变化趋势, 并考察不同性别儿童孤独感变化的差异性以及同伴接纳对孤独感变化的影响。结果发现：(1) 2~5年级小学生孤独感呈曲线递减趋势, 递减速度逐渐减缓, 起始水平及发展速度均存在显著的个体差异; (2)女孩起始的孤独感水平显著低于男孩, 而发展速度、加速度则不存在显著的性别差异; (3)较高的同伴接纳对当时儿童孤独感的降低具有显著的促进作用。研究采用孤独感发展的情境观, 并结合儿童认知、自我发展的特点对结果进行了分析。     

The Joint Multivariate Modeling of Multiple Mixed Response Sources: Relating Student Performances with Feedback Behavior

The present study concerns a Dutch computer-based assessment, which includes an assessment process about information literacy and a feedback process for students. The assessment is concerned with the measurement of skills in information literacy and the feedback process with item-based support to improve student learning. To analyze students’ feedback behavior (i.e. feedback use and attention time), test performance, and speed of working, a multivariate hierarchical latent variable model is proposed. The model can handle multivariate mixed responses from multiple sources related to different processes and comprehends multiple measurement components for responses and response times. A flexible within-subject latent variable structure is defined to explore multiple individual latent characteristics related to students’ test performance and feedback behavior. Main results of the computer-based assessment showed that feedback-information pages were less visited by well-performing students when they relate to easy items. Students’ attention paid to feedback was positively related to working speed but not to the propensity to use feedback.     

Resilience is associated with better recovery in Chinese people diagnosed with coronary heart disease

This study investigated the impact of personal resilience (a composite measure of optimism, perceived control and self-esteem) on outcome measures in 67 Chinese coronary heart disease patients in response to an 8-week rehabilitation programme. The effect of personal resilience on posttraumatic growth attributed to the onset of heart disease was also examined. Results indicated that coronary heart disease patients high in personal resilience achieved better outcomes than those low in personal resilience, as indicated by higher physical and mental summary measures in SF-36, lower cholesterol levels and better performance on the 6?min walk test. Moreover, personal resilience was demonstrated to be a significant predictor of the level of posttraumatic growth although the rehabilitation programme exerted a weak mediating effect on the link between personal resilience and posttraumatic growth. Findings were discussed in relation to clinical implications of the construct of personal resilience and the intervention programme.     

The structure of adversarial growth in a sample of cancer patients 8 years post-diagnosis: a revision of the SLQ-38

Stressful and traumatic events may trigger positive life changes, so-called adversarial growth. Despite growing interest in this topic, the structure and dimensionality of this concept has not been established. Recently, empirical reviews have suggested that the factors underlying this construct are highly related. Currently, the use of confirmatory factor analysis to test this hypothesis is advocated. Using data from cancer patients (n = 206), this study investigated the dimensionality of a Dutch translated version of the Silver Lining Questionnaire (SLQ-38). A 16-item SLQ (SLQ-16), with three subscales or first-order factors (enhanced personal relationships, changes in life philosophy and changes within the self) loading on a second-order general adversarial growth factor, was a good fitting model. In conclusion, the SLQ-16 may prove useful in the assessment of adversarial growth following illness.     

Decomposing the within-person and between-person sources of variation in physical activity-cognition associations for low-active older adults

Abstract

Objectives: To examine within-person and between-person sources of variation in the relationship between physical activity and cognition in older adults participating in a walking program. To explore whether demographic, health and fitness variables, and their interactions with activity, are significant predictors of cognition.

Design: Brief longitudinal burst design.

Participants: 118 participants (91 females, mean age?=?72.81?+ 5.24 years).

Main Outcome Measures: Cognition, self-reported moderate-to-vigorous walking and self-reported moderate-to-vigorous physical activity were assessed at baseline and 6, 9, 12 and 16 weeks follow-up. Attendance at weekly walks was also recorded.

Results: Within-persons, changes in physical activity were related to select measures of executive functioning, with increased activity predictive of better cognition (three of four cognitive functions, p<.05). Between-persons, activity was also associated with cognition (two of four cognitive functions, p<.05). Younger age and higher education were related to better cognition. Interactions of demographic, health, and fitness variables with changes in within-person activity were generally non-significant.

Conclusion: The results highlight the importance of distinguishing within- from between-person effects in longitudinal analyses of the association between physical activity and cognition. This stringent within-person test of association underscores the potential value of simple physical activity interventions for improving cognitive function.     

Adherence to pharmacological treatment of non-malignant chronic pain: The role of illness perceptions and medication beliefs

The objective was to identify the degree to which illness perceptions and medication beliefs explain variations in reported adherence to medication prescribed for the treatment of non-malignant chronic pain and to test the applicability of an extended version of the self-regulatory model to the chronic pain population. A cross-sectional design included 217 clinic patients completing validated questionnaires assessing their illness perceptions, medication beliefs and reported adherence to medication. Perceptions of illness (pain) as chronic, uncontrollable and unremitting were associated with greater adherence, fewer medication concerns and a belief that treatment was necessary. Structural equation modelling supports an extended SRM for chronic pain. It suggests that patients holding perceptions of serious consequences of pain and high emotion levels have more concerns about medication and are less adherent. Perceptions of serious illness consequences are also associated with stronger beliefs about the necessity of medicines and greater adherence. Beliefs about illness and medication are associated with adherence to treatment in chronic pain and this can be explained by an extended SRM. Results are preliminary and require replication. Further studies should explore the role that emotion has on coping strategies in chronic pain. Interventions should focus on altering unhelpful beliefs that reduce adherence.