失独父母创伤后应激障碍的症状结构、特征及预测因素

为考察我国失独父母创伤后应激障碍(PTSD)的症状特征及预测因素, 采用失独父母自身和孩子有关的基本信息问卷, 创伤后应激检查量表平民版(PCL-C), 对中国的463名失独父母进行调查。结果表明: (1)采用验证性因素分析验证了包括闯入、回避性、麻木性、精神痛苦性唤起和焦虑性唤起等5个因子的PTSD精神痛苦性唤起模型在中国失独父母中的适用性。(2)根据DSM-IV的诊断标准进行筛查, 71.92%的失独父母为PTSD阳性, 其中PTSD的回避、闯入、精神痛苦性唤起、情感麻木、焦虑性唤起因子阳性率依次增高。(3)失独父母的年龄、孩子的离世时长与PTSD症状具有显著的相关性; 失独父母的PTSD症状得分在自身性别、家庭所在地及家庭收入状况上存在显著差异; 将所有因素纳入回归方程后发现: 最能预测失独父母PTSD症状的因素包括: 性别、家庭所在地、年龄。     

小学生创伤后应激障碍对睡眠问题的影响:积极认知的调节作用

本研究采用创伤暴露程度问卷、儿童创伤后应激障碍症状量表、应对方式问卷和儿童行为问题核查表对汶川地震30个月后844名小学生进行调查,探讨汶川地震后小学生的创伤后应激障碍(PTSD)、积极认知与睡眠问题之间的关系。结果表明,PTSD对睡眠问题具有正向预测作用,积极认知对睡眠问题的预测作用不显著。调节效应的检验结果发现,积极认知调节着PTSD及其回避性症状对睡眠问题的影响,具体表现为PTSD及其回避性症状对睡眠问题的预测作用随着积极认知水平的增加而降低,但是积极认知分别在PTSD的闯入性症状和警觉性增高症状与睡眠问题的关系之间不起调节作用。     

青少年创伤后应激障碍对反社会行为的影响：述情障碍与复原力的作用

为考察青少年创伤后应激障碍（PTSD）、述情障碍、复原力与反社会行为之间的关系,研究采用了地震暴露程度量表、PTSD核查表、述情障碍量表、复原力量表和儿童行为核查表（青少年）对九寨沟地震后的621名中学生进行了调查。结果发现,在控制了汶川和九寨沟地震暴露后,PTSD可以直接导致反社会行为,也可以通过述情障碍间接地引发反社会行为;复原力可以缓解述情障碍和反社会行为,也可以缓冲PTSD对反社会行为的诱发或加剧作用,但不能显著地调节PTSD与述情障碍之间的关系。     

创伤后应激障碍对震后青少年自杀意念的影响：安全感的调节作用

为探讨创伤后应激障碍（PTSD）及其各个症状簇对震后青少年自杀意念的影响，并检验安全感在其中的调节作用，研究采用创伤暴露程度问卷、流调中心抑郁量表儿童版、DSM-5的PTSD症状核查表、安全感量表和儿童行为问题核查表对汶川地震8.5年后的1136名中学生进行调查。结果发现：PTSD、负性认知和情绪改变症状、警觉性增高症状分别正向预测自杀意念，侵入性症状和回避性症状对自杀意念的预测作用不显著；安全感在侵入性症状、负性认知和情绪改变症状、警觉性增高症状、PTSD与自杀意念之间起负向调节作用，在回避性症状与自杀意念之间不起调节作用。这表明PTSD各症状簇对震后青少年自杀意念的预测作用不同，且安全感在其中发挥的调节作用也不同。     

青少年感恩与创伤后应激障碍症状的关系:社会支持和心理弹性的中介作用

在"5.12"汶川地震后18个月时,采用青少年感恩量表、社会支持评定量表、心理弹性量表和创伤后应激障碍自评量表,对都江堰地区1439名经历地震的青少年进行问卷调查,考察感恩、社会支持、心理弹性与创伤后应激障碍(PTSD)症状的关系。结果表明:(1)感恩、社会支持和心理弹性均与PTSD症状呈显著的负相关,相关系数分别为-0.18,-0.17和-0.24;(2)感恩不仅直接影响PTSD症状,而且还通过社会支持和心理弹性的部分中介作用间接影响PTSD症状,中介效应占总效应的62%。     

灾后中小学生创伤后应激障碍和抑郁症状的共存模式

为揭示灾后中小学生创伤后应激障碍(PTSD)和抑郁在症状层面的共存模式, 本研究分别在汶川地震和雅安地震1年后, 对灾区的中小学生进行问卷调查, 并基于高斯图形模型和贝叶斯爬山算法构建了二者的共存症状网络。结果发现, 在DSM-IV的框架下, PTSD和抑郁的重叠症状以及情绪麻木症状在二者的共存网络中起到了桥接作用; 子网络探测结果与DSM-IV划分的症状边界不同, PTSD中的闯入性症状和回避性症状是其区别于抑郁的特异性症状, 且多为闯入性症状激发回避性症状; 在二者的共存模式中, 多为抑郁症状激发PTSD症状。上述结果在汶川和雅安两个样本中均得到了交叉验证, 具有一定的可推广性。     

创伤暴露程度对青少年物质滥用的影响：创伤后应激障碍与依恋的中介作用

为了考察汶川地震后青少年的创伤暴露程度、创伤后应激障碍（PTSD）、父母依恋和同伴依恋与物质滥用之间的关系,采用创伤暴露程度问卷、儿童创伤后应激障碍症状量表、父母与同伴依恋问卷和物质滥用问卷对汶川县和茂县的1435名中学生进行调查,选取有物质滥用的青少年354名作为本研究的对象。结果发现：创伤暴露程度可以直接正向预测作用物质滥用。不过,在创伤暴露与物质滥用直接关系之间加入PTSD、父母和同伴依恋之后,创伤暴露程度对物质滥用的直接预测作用不再显著,并且创伤暴露程度不能通过同伴依恋预测物质滥用,也不能通过PTSD经同伴依恋对物质滥用发挥多重中介作用;但创伤暴露程度能通过PTSD正向预测物质滥用,可以通过父母依恋负向预测物质滥用,并且创伤暴露程度还可以通过PTSD经过父母依恋对物质滥用发挥正向的多重中介作用。     

社会支持对震后青少年创伤后应激障碍和创伤后成长的影响:自我效能感的中介作用

本研究采用创伤暴露问卷、社会支持问卷、自我效能感量表、创伤后应激障碍症状核查表和创伤后成长问卷,在汶川地震8.5年后对地震极重灾区的1185名中学生进行调查,考察社会支持对创伤后应激障碍（PTSD）和创伤后成长（PTG）的影响,并检验自我效能感在其中的中介作用。结果发现：在控制创伤暴露程度、性别和年龄等变量后,社会支持不仅可以直接负向预测PTSD、正向预测PTG,也可以通过自我效能感的中介作用负向预测PTSD、正向预测PTG。这表明,自我效能感在社会支持与PTSD、社会支持与PTG的关系中都具有部分中介效应。     

青少年的情绪调节策略对创伤后应激障碍和创伤后成长的影响:社会支持的调节作用

为了考察雅安地震后青少年的情绪调节策略、社会支持与创伤后应激障碍(PTSD)和创伤后成长(PTG)之间的关系,采用创伤暴露程度问卷、情绪调节策略问卷、社会支持问卷、儿童创伤后应激障碍症状量表和创伤后成长问卷对雅安市芦山县的315名中学生进行调查,结果发现:创伤暴露程度对认知重评和表达抑制的预测作用不显著,对PTSD和PTG具有显著的正向预测作用。青少年的认知重评策略可以显著地负向预测PTSD、正向预测PTG,表达抑制策略仅对PTSD有显著的正向预测作用、对PTG的预测作用不显著;社会支持可以显著地调节表达抑制策略对PTSD和PTG的作用,表现为表达抑制对PTSD的正向预测作用随着社会支持的增加而降低,并可随着社会支持的增加而对PTG发挥促进作用。     

青少年的自我同情对创伤后应激障碍与创伤后成长的影响:感恩的中介作用

采用自我同情量表、感恩问卷、创伤后应激障碍症状核查表和创伤后成长问卷对雅安地震4.5年后的499名中学生进行调查,以考察自我同情对创伤后应激障碍(PTSD)和创伤后成长(PTG)的影响,并检验感恩在其间的中介作用。结果发现,积极自我同情可以直接负向预测PTSD、正向预测PTG,消极自我同情可以直接正向预测PTSD;积极自我同情可以通过感恩负向预测PTSD、正向预测PTG,消极自我同情可以通过感恩正向预测PTSD、负向预测PTG。研究显示,积极的自我同情可以缓解青少年的PTSD、促进PTG的发展,而消极自我同情会加重青少年的PTSD;感恩在自我同情与PTSD和PTG之间发挥了显著的中介作用。     

Relationships among Dispositional Attributional Style,Trauma-Specific Attributions,and PTSD Symptoms

The learned helplessness model and its various revisions suggest that causal attributions influence responses to events. This study examined relationships among the 3-factor symptom clusters of posttraumatic stress disorder (PTSD) represented in the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM–IV; American Psychiatric Association, 1994) and the individual dimensions of dispositional attributional style and trauma-specific attributions (i.e., internal–external, stable–unstable, global–specific). Relationships among attributions and clusters of PTSD symptoms represented by the 4-factor dysphoria model were also examined. Trauma-specific attributions were most predictive of PTSD symptoms, with higher associations for avoidance and numbing symptoms compared to arousal symptoms in the three-factor model and higher associations for dysphoria symptoms compared to arousal and avoidance symptoms in the four-factor dysphoria model. Results suggest that cognitive vulnerabilities could underlie the comorbidity between PTSD and depression and might represent a high-impact target for treatment.     

Confirmatory factor analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in disaster workers exposed to the World Trade Center Ground Zero

Although posttraumatic stress disorder (PTSD) factor analytic research has yielded little support for the DSM-IV 3-factor model of reexperiencing, avoidance, and hyperarousal symptoms, no clear consensus regarding alternative models has emerged. One possible explanation is differential instrumentation across studies. In the present study, the authors used confirmatory factor analysis to compare a self-report measure, the PTSD Checklist (PCL), and a structured clinical interview, the Clinician-Administered PTSD Scale (CAPS), in 2,960 utility workers exposed to the World Trade Center Ground Zero site. Although two 4-factor models fit adequately for each measure, the latent structure of the PCL was slightly better represented by correlated reexperiencing, avoidance, dysphoria, and hyperarousal factors, whereas that of the CAPS was slightly better represented by correlated reexperiencing, avoidance, emotional numbing, and hyperarousal factors. After accounting for method variance, the model specifying dysphoria as a distinct factor achieved slightly better fit. Patterns of correlations with external variables provided additional support for the dysphoria model. Implications regarding the underlying structure of PTSD are discussed.     

Posttraumatic Stress Disorder Symptom Structure in Chinese Adolescents Exposed to a Deadly Earthquake

This present study examined the structure of posttraumatic stress disorder (PTSD) symptoms in a large sample of Chinese adolescents exposed to a deadly earthquake. A total of 2,800 middle school students aged 12 to 18 years participated in the study 6 months after the “Wenchuan Earthquake”. Results of confirmatory factor analysis indicated that a five-factor intercorrelated model composed of intrusion, avoidance, numbing, dysphoric arousal, and anxious arousal, fit data significantly better than both the four-factor numbing model King et al. (Psychological Assessment 10:90–96, 1998) and the four-factor dysphoria model Simms et al. (Journal of Abnormal Psychology 111:637–647, 2002). Further examination of the external convergent and discriminant validity revealed that except for the dysphoric arousal factor, the remaining four PTSD factors yielded significantly different correlations with external measures of anxiety vs. depression. The findings add to the limited literature on the factor structure of PTSD in youths and on the five-factor PTSD model. In addition, they provide more detail into the latent psychopathological processes of PTSD, and inform the forthcoming DSM-5.     

Comparing posttraumatic stress disorder's symptom structure between deployed and nondeployed veterans

We tested two empirically validated 4-factor models of posttraumatic stress disorder (PTSD) symptoms using the PTSD Checklist: King, Leskin, King, and Weathers' (1998) model including reexperiencing, avoidance, emotional numbing, and hyperarousal factors, and Simms, Watson, and Doebbeling's (2002) model including reexperiencing, avoidance, dysphoria, and hyperarousal. Our aim was to determine which fit better in two groups of military veterans: peacekeepers previously deployed to a war zone (deployed group) and those trained for peacekeeping operations who were not deployed (nondeployed group). We compared the groups using multigroup confirmatory factor analysis. Adequate model fit was demonstrated among the nondeployed group, with no significant difference between King et al.'s (1998) model (separating avoidance and numbing) and Simms et al.'s (2002) similar model involving a dysphoria factor. A better fitting factor structure consistent with Simms et al.'s (2002) model was found in the deployed group. Comprehensive measurement invariance testing demonstrated significant differences between the deployed and nondeployed groups on all structural parameters, except observed variable intercepts (thus indicating similarities only in PTSD item severity). These findings add to researchers' understanding of PTSD's factor structure, given the revision of PTSD that will appear in the forthcoming 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 2010)--namely, that the factor structure may be quite different between groups with and without exposure to major traumatic events.     

Latent structure of the Post-Traumatic Stress Disorder (PTSD) Checklist for DSM-5 (PCL-5) in South African mortuary workers

This study applied confirmatory factor analysis (CFA) to determine the dimensionality of PTSD symptoms as measured by the Post-Traumatic Stress Disorder Checklist for DSM-5 (PCL-5, Weathers et al., 2013). Participants were 150 trauma-exposed mortuary workers. Six alternative factor solutions resulted from the CFA; including Dysphoria model (four-factor), Dysphoric Arousal model (five-factor), Anhedonia model (six-factor), Externalising model (six-factor), and Hybrid model (seven-factor). Compared to the other models, the five-factor Dysphoric Arousal model had superior fit to the data. Overall, the current results provide evidence for the factorial validity and reliability of scores for the PCL-5 for research use in the South African context.     

Longitudinal factor structure of posttraumatic stress symptoms related to intimate partner violence

Confirmatory factor analysis (CFA) studies have suggested that a model of posttraumatic stress disorder (PTSD) that is characterized by 4 factors is preferable to competing models. However, the composition of these 4 factors has varied across studies, with 1 model splitting avoidance and numbing symptoms (e.g., D. W. King, G. A. Leskin, L. A. King, & F. W. Weathers, 1998) and the other including a dysphoria factor that combines numbing and nonspecific hyperarousal symptoms (L. J. Simms, D. Watson, & B. N. Doebbeling, 2002). Using the PTSD Checklist (F. W. Weathers, B. T. Litz, D. S. Herman, J. A. Huska, & T. M. Keane, 1993) and CFA, the authors compared these models with competing models. A model of PTSD with 4 intercorrelated factors of Intrusions, Avoidance, Dysphoria, and Hyperarousal was found superior among 396 medical patients who screened positive for intimate partner violence (IPV) and 405 women seeking services for IPV. Structural invariance testing indicated that this 4-factor model remains stable across service setting and time.     

Confirmatory Factor Analysis of the Posttraumatic Stress Disorder Checklist

Several studies have employed confirmatory factor analysis (CFA) to examine the latent structure of the Posttraumatic Stress Disorder (PTSD) Checklist (PCL; Weathers, Litz, Herman, Huska, & Keane, 1993), a measure that assesses PTSD symptomatology. Findings have failed to support the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text revision [DSM–IV–TR]; American Psychiatric Association, 2000) PTSD model, consisting of reexperiencing, avoidance/numbing, and arousal factors, and no consensus has emerged regarding the best fitting alternative model. Additionally, most studies have utilized homogeneous trauma samples. This study used CFA to examine the PCL factor structure in a sample with exposure to various traumatic events. Superior fit was demonstrated by a model specifying reexperiencing, avoidance, dysphoria, and arousal factors.     

The structure of PTSD among two cohorts of returning soldiers: before, during, and following deployment to Iraq

Evidence suggests either a four-factor emotional numbing or dysphoria model likely reflects the underlying structure of posttraumatic stress disorder (PTSD). Questions remain as to which of these structures best represents PTSD, how the structure changes with time, the applicability of models to returning veterans, and the validity of the symptom clusters. The present study addresses these questions among two longitudinal samples of National Guard soldiers assessed prior to, during, and following a combat deployment to Iraq. Findings support a four-factor intercorrelated dysphoria model of PTSD that remains stable across samples and time points. Differential associations were observed among PTSD symptom clusters over time and between symptom clusters and both depression and combat exposure, supporting important distinctions between symptom clusters.     

Symptoms of Post-Traumatic Stress Disorder in Bereaved Children and Adolescents: Factor Structure and Correlates

This study investigated the factor structure and correlates of posttraumatic stress-disorder (PTSD) symptoms among children and adolescents confronted with the death of a loved one. Three hundred thirty-two bereaved children and adolescents (aged 8–18; 56.9 % girls) who all received some form of psychosocial support after their loss, completed self-report measures of PTSD, together with measures tapping demographic and loss-related variables, depression, prolonged grief, and functional impairment. Parent-rated indices of impairment were also collected. We first evaluated the fit of six alternative models of the factor structure of PTSD symptoms, using confirmatory factor analyses. Outcomes showed that the 4-factor numbing model from King et al. (Psychological Assessment 10, 90–96, 1998), with distinct factors of reexperiencing, avoidance, emotional numbing, and hyperarousal fit the data best. Of all participants, 51.5 % met DSM-IV criteria for PTSD. PTSD-status and scores on the PTSD factors varied as a function of age and gender, but were unrelated to other demographic and loss-related variables. PTSD-status and scores on the PTSD factors were significantly associated symptom-levels of depression, prolonged grief, and functional impairment. Findings complement prior evidence that the DSM-IV model of the factor structure of PTSD symptoms may not represent the best conceptualization of these symptoms and highlight the importance of addressing PTSD symptoms in children and adolescents seeking help after bereavement.     

Postdisaster stress in the United States and Mexico: a cross-cultural test of the multicriterion conceptual model of posttraumatic stress disorder.

Data on symptoms of posttraumatic stress disorder (PTSD) were collected 6 months after Hurricanes Paulina (N = 200; Mexico) and Andrew (non-Hispanic n = 270; United States) using the Revised Civilian Mississippi Scale. A 4-factor measurement model that represented the accepted multicriterion conceptualization of PTSD fit the data of the U.S. and Mexican samples equally well. The 4 factors of Intrusion, Avoidance, Numbing, and Arousal correlated significantly and equivalently with severity of trauma in each sample. A single construct explained much of the covariance of the symptom factors in each sample. However, modeling PTSD as a unidimensional construct masked differences between samples in symptom severity. With severity of trauma controlled, the Mexican sample was higher in Intrusion and Avoidance, whereas the U.S. sample was higher in Arousal. The results suggest that PTSD is a meaningful construct to study in Latin American societies.