公安民警的创伤后应激症状对执行功能的影响—基于Stroop范式的探究

公安民警常常身临应激和危险情境中,是创伤事件的易感人群,但其创伤后应激症状对执行功能的影响研究尚且缺乏。已有研究发现,具有创伤后应激症状的个体的执行功能存在缺陷,表现在对冲突信息的抑制能力受损以及对创伤相关信息的注意偏向和情绪唤起。本研究以公安民警为实验组被试,据其创伤后应激症状分为高低两组,在校大学生为对照组被试,采用Stroop范式探究创伤后应激症状对公安民警“冷”、“热”执行功能的影响。结果表明,具有创伤后应激症状的公安民警在“冷”、“热”执行功能上不存在缺陷,但仍在一定程度上受到创伤后应激症状的影响。启示对具有创伤后应激症状的公安民警进行干预时,应关注其症状的严重程度,在“热”执行功能上寻求更有效的干预方式。     

术后乳腺癌患者体象对创伤后应激障碍和创伤后成长的影响：反刍的中介作用

为探讨乳腺癌患者反刍这一认知情绪调节方式在体象和创伤后应激障碍（PTSD）、创伤后成长（PTG）之间的中介作用,采用体象量表（BIS）、认知情绪调节问卷中文版（CERQ-C）、创伤后应激障碍量表（PSS）和创伤后成长问卷（PTGI）对150名乳腺癌术后患者进行研究。结果发现：（1）乳腺癌患者的体象可以正向预测PTSD和PTG;（2）乳腺癌患者的反刍在体象和PTSD的闯入性症状、回避性症状中起中介作用,在体象与PTG中的中介作用不显著。结果表明,体象既可以正向预测乳腺癌患者的PTSD和PTG,也可以通过反刍的中介作用影响PTSD。     

Rank order in pairs of communally nursing female mice (Mus musculus domesticus) and Maternal Aggression Towards Conspecific Intruders of Differing Sex

This study examined social behavior between pairs of unfamiliar lactating females, with litters of the same age, at different periods after parturition (3, 7, and 17 days). Tests were generally followed by the formation of communal rearing nests, and subsequent maternal attack on intruders of differing sex was assessed. In all three intervals lactating females showed ritualized attack with formation of clear dominance-subordination relationships before combining litters into communal nests. The dominant females in 90% of cases started to retrieve alien pups into their nests. Agonistic behavior and communal nest formation were most rapid when pups were around 3 days old. Maternal attack on conspecific intruders was mainly displayed by the dominant lactating females. Male and female intruders were equally attacked (in terms of frequency and intensity of attack), but there was less such aggression when pups were around 17 days of age. Nevertheless the topography of biting attack employed against female and male conspecific intruders was different. Females were attacked using a strategy avoiding bites to the head and ventral surface (indicative of “offensive” behavior) whereas males were severely bitten on vulnerable body regions (indicative of “defensive” behavior).     

The impact of communal-mastery versus self-mastery on emotional outcomes during stressful conditions: a prospective study of Native American women

Past research has examined the stress resiliency of individuals high in sense of personal-mastery. However, it has been theorized that within more collectivist cultures, a sense of shared efficacy, which we call communal-mastery, may be more central to people's resiliency in the face of challenging life circumstances. We compared the impact of sense of self-mastery (i.e., I am the key to my success) to that of communal-mastery (i.e., I am successful by virtue of my social attachments) in a prospective study among a group of rural 103 Native American women residing on Indian Reservations in Montana. We found that women high in communal-mastery experienced less increase in depressive mood and anger, especially when faced with high stress circumstances, than women who were low in communal-mastery. In addition, the beneficial impact of communal-mastery was found to be more effective than self-mastery for these women.     

Beyond bruises and broken bones: the joint effects of stress and injuries on battered women's health

We investigated the joint mediating effects of injuries and stress on the relationship between abuse and women's health. A community sample of 397 women, half of whom had been assaulted by an intimate partner within the prior 6 months, was interviewed about their experience of intimate partner violence, injuries, stress, income, depression, and physical health problems. Structural equation modeling techniques confirmed the complex model of hypothesized indirect effects of abuse on women's physical health problems through injuries, stress, and depression. Stress accounted for 80% of the indirect effect of abuse on women's physical health. Its direct effect on physical health was somewhat larger than its indirect effect through depression, but both processes played a key role in determining the effect of abuse on women's physical health problems. Furthermore, abuse was a stronger predictor of women's stress than was poverty. Implication and future research are discussed.     

Arousal and the Relationship Between Positive and Negative Affect: An Analysis of the Data of Ito,Cacioppo, and Lang (1998)

Research on positive and negative emotional states has supported several models of how those states relate to each other. Many studies suggest that they are independent, the bivariate view, while others suggest that they are inversely correlated, the bipolar view. Other research has shown that stress is a major moderator of the relationship; the affects become coupled under conditions of high stress, a contextual model, but are relatively independent otherwise. To expand the range of tests of this dynamic model of affect, we reanalyzed a data set initially reported by Ito, Cacioppo, and Lang (1998) on affect-eliciting picture stimuli. In that study, arousal was assessed separately from positive and negative affect, allowing investigation of a source of interaffect relationships different from stress, per se. Arousal interacted with positive and negative affect, showing both bivariate and bipolar relationships, and effects similar to stress. Affective reactions to the stimuli became more inversely correlated when the affects were high and interacting with higher arousal. The data supported the dynamic model of affect and suggest the need for further analyses of the linkages between stress, arousal, and reduced levels of emotional complexity.     

Neurocognitive Functioning in Posttraumatic Stress Disorder

This paper reviews the literature on performance on standard neuropsychological tests among individuals with posttraumatic stress disorder (PTSD). Of 19 studies, 16 reported impairment of attention or immediate memory (or both); however, most of these studies included PTSD patients with significant psychiatric comorbidity, so that the extent to which the observed deficits are specifically attributable to PTSD remains unclear. Other potential confounds, including medical illness, substance abuse, and motivational factors, further preclude definitive conclusions at present. Results of structural and functional neuroimaging studies of PTSD are also summarized. Two studies have reported correlations between hippocampal volume and cognitive findings in PTSD patients; functional studies have indicated specific findings in limbic regions, although the relationship of these results to neuropsychological performance remains to be explored.     

Police Officer Performance Under Stress: A Pilot Study on the Effects of Visuo-Motor Behavior Rehearsal

This study examined the effectiveness ofvisuo-motor behavior rehearsal(VMBR) as a method of reducing acute stress and improving police officer performance. Fifty-four recruits were randomly assigned to a treatment and a nontreatment condition prior to undergoing a highly stressful, critical event training scenario involving live fire. A manipulation check showed that participants who received VMBR displayed significantly lower scores on the cognitive state anxiety subscale of the Competitive State Anxiety Inventory-2; somatic state anxiety and self-confidence were unaffected by the VMBR treatment. Most importantly, participants in the VMBR training condition displayed better performance on the critical event scenario, including significantly more assailant hits. The findings are discussed with respect to the four-stage model of stress and human performance of Salas and colleagues.     

Pace of Life and Enjoyment of Life

The paper addresses the paradox that people in modern societies believe themselves to be very happy and satisfied with their lives while simultaneously are subjected to increasing time pressure and pace of life. It starts with presenting evidence for time pressure covering objective and subjective indicators. Evidence for Germany is given by comparing time-budgets in 1991/92 and in 1999. Time use among full time employed in Germany and other EU-societies in the 1990s is compared to the US and Japan by means of diary-data. As regards work life, overwork and the gap between actual and preferred working hours are examined. Survey-results on the relationship between work load, time pressure, stress and health are reported.Most of these data support the conclusion that time pressure has emerged as a major social problem. Hence citizens are beginning to consider time prosperity as a dimension of their well-being beyond their consumer wealth.However, this growing pace of life does not reduce life satisfaction and happiness. Here a paradox evolves as increasing time pressure goes hand in hand with increased subjective well-being (SWB) at country level in cross-cultural comparison as well as at individual level.In the third section some answers to this paradox are explored: A first answer is offered through the modernization theory: life satisfaction and QOL are proliferating along with economic growth and living standards. This process at the same time accelerates social life. Hence, the negative effects of time pressure are counterbalanced by various yields of the modernization process resulting in a pattern of "heavy-going" satisfaction.A second explanation is the psychological approach: time pressure fulfils positive functions for mobilizing individual resources. A variation of this argument is that the multiple-choice-society offers a wide variety of attractive options resulting in people engaging in too many activities. Here, the enjoyment of life is equated with taking advantage of every opportunity.However, this paper prefers a third approach based on Simmel's explanation of the ambivalent consequences of modernity. Even where the majority of citizens report high levels of happiness and life satisfaction – which can be explained through "arousal" or "eu-stress" – the need to ease the time-burden of disadvantaged groups and to down-speed work and social life in general is essential.