Stepparents and Parenting Stress: The Roles of Gender,Marital Quality,and Views about Gender Roles

Previous research suggests that stepparenting can be stressful, although the mechanisms that contribute to the experience of parenting stress in stepfamilies are less clear. This study examines gender, marital quality, and views about gendered family roles as correlates of parenting stress among 310 stepmothers, stepfathers, and biological mothers and fathers. Findings suggest that stepparents, and especially stepmothers, experience higher levels of parenting stress than biological parents. Findings also suggest that less traditional views about gendered family roles and higher dyadic adjustment are associated with lower parenting stress for stepparents, particularly in combination. Stepparents reporting both of these protective factors were indistinguishable in terms of parenting stress from biological parents. These findings indicate potential pathways to mitigate the stress associated with stepparenting.     

心理社会应激的免疫反应规律与机制

心理社会应激会引起免疫系统发生免疫防御、免疫自稳和免疫监视方面的功能变化, 并随着应激刺激的时间和强度的变化而发生着异常与正常之间的动态转变。其机制与遗传、神经内分泌、自由基代谢和肠道菌群变化等生物学因素相关, 且小胶质细胞可能在其中起着重要的中介作用。诸多的生物学因素与年龄、性别和经济地位等人口学因素共同决定着心理社会应激的免疫反应发生发展。在其干预中, 运动疗法中的体育锻炼是极为值得重视的一种手段。     

Acute stress reactions: can biological responses predict posttraumatic stress disorder?

What biological responses characterize those acute trauma reactions that develop into chronic psychiatric disorder? The need to understand the genesis of posttraumatic psychological disorders has resulted in much attention on biological reactions in the initial aftermath of trauma exposure. This review outlines the prevailing biological models of acute stress reaction and critiques the available evidence concerning biological responses to trauma that are associated with subsequent psychological disorder. The roles of peritraumatic dissociation and vulnerability factors for acute stress reaction are also reviewed. The major challenges for research on psychobiological responses to trauma are highlighted.     

Tend and Befriend: Biobehavioral Bases of Affiliation Under Stress

ABSTRACT— In addition to fight-or-flight, humans demonstrate tending and befriending responses to stress—responses underpinned by the hormone oxytocin, by opioids, and by dopaminergic pathways. A working model of affiliation under stress suggests that oxytocin may be a biomarker of social distress that accompanies gaps or problems with social relationships and that may provide an impetus for affiliation. Oxytocin is implicated in the seeking of affiliative contact in response to stress, and, in conjunction with opioids, it also modulates stress responses. Specifically, in conjunction with positive affiliative contacts, oxytocin attenuates psychological and biological stress responses, but in conjunction with hostile and unsupportive contacts, oxytocin may exacerbate psychological and biological stress responses. Although significant paradoxes remain to be resolved, a mechanism that may underlie oxytocin's relation to the health benefits of social support may be in view.     

人格特质对个体心理性应激反应的调节作用

心理性应激是个体的内稳态受到社会心理威胁时候的状态。面对急性心理性应激源, 有机体的各大机能系统, 包括神经内分泌系统、免疫系统以及自主神经系统等, 会出现一系列生物功能的改变。已有研究表明人格特质(如自尊、特质焦虑和大五人格)会影响个体在心理性应激情境中的反应差异且影响方式尚不统一, 并且不同文化环境下人格特质影响心理性应激反应的方式是不一样的, 然而这种结果的差异有可能是生物标记物的不一致造成的, 也有可能是心理性应激任务的不一致造成的, 不能直接进行比较。未来研究应该在控制这些无关变量的基础上, 从跨文化的角度去考察人格特质对个体心理性应激反应差异的影响。     

Lifetime stress exposure and health: A review of contemporary assessment methods and biological mechanisms

Life stress is a central construct in health research because it is associated with increased risk for a variety of serious mental and physical health problems, including anxiety disorders, depression, cardiovascular disease, autoimmune disorders, Alzheimer's disease, certain cancers, and other diseases of aging. In this review, we examine how lifetime stress exposure contributes to elevated disease risk and explore ongoing measurement and scientific issues related to this topic. To accomplish these goals, we first review existing instruments that have been developed for assessing perceived stress, self‐reported life events, interviewer‐assessed life stressors, and lifetime stress exposure. Next, we describe laboratory‐based tasks that have been used for characterizing individual differences in psychological and biological stress reactivity. These methods have yielded an enormous amount of data showing how life stress influences the activity of the hypothalamic–pituitary–adrenal axis, hypothalamic–pituitary–gonadal axis, sympathetic–adrenal–medullary axis, and immune system, and how such processes can in turn cause allostatic load and biological embedding of the stress effect at the level of the human brain and genome. At the same time, many critical measurement and scientific issues remain unresolved, and we discuss these topics last while describing some pressing issues and opportunities for future research on stress and health.     

Perceived stress and physiological dysregulation in older adults

We use a population-based representative sample of older Taiwanese to investigate links between respondents' perceived levels of stress and a broad set of biological measures. These biomarkers were collected at a single time (2000) and reflect sympathetic nervous system (SNS)-activity, hypothalamo-pituitary-adrenal (HPA)-activity, immune function, cardiovascular function, and metabolic pathways. We model the relationship between perceived stress and (1) extreme values for each of 16 individual biological indicators; and (2) a measure of cumulative physiological dysregulation based on the full set of biomarkers. We consider two measures of perceived stress, one derived from the 2000 interview and the second based on data from three interviews (1996-2000). Age and sex-adjusted models reveal significant associations between measures of perceived stress and extreme values of cortisol, triglycerides, interleukin-6 (IL-6), dehydroepiandrosterone sulphate (DHEAS) and fasting glucose. Examined individually, numerous biomarkers, including those pertaining to blood pressure and obesity, are not significantly related to perceived stress. Jointly, however, the measure of cumulative physiological dysregulation is associated with both the level of perceived stress at a given time and to a longitudinal measure of perceived stress. Some results suggest that the relationship between level of perceived stress and physiological response is stronger for women than men.     

Caregiving stress and adjustment problems of Kenyan orphans raised by grandmothers

The present study compared levels of caregiving stress among 115 biological mothers and 134 grandmothers raising their orphaned grandchildren. The associations between parenting stress and adjustment difficulties exhibited by children raised by these two groups of caregivers were also assessed. Full‐time caregiving grandmothers reported elevated levels of stress more than did the biological mothers. A significant negative association was found between child maladjustment and caregiving stress. Caregivers' experienced stress was linked to advanced age and extensive, new adoptive roles now occupied by grandmothers. There was no evidence suggesting that these orphaned children were less well adjusted when compared to children still living with their own birth parents. Copyright © 2005 John Wiley & Sons, Ltd.     

Review of Family Relational Stress and Pediatric Asthma: The Value of Biopsychosocial Systemic Models

Asthma is the most common chronic disease in children. Despite dramatic advances in pharmacological treatments, asthma remains a leading public health problem, especially in socially disadvantaged minority populations. Some experts believe that this health gap is due to the failure to address the impact of stress on the disease. Asthma is a complex disease that is influenced by multilevel factors, but the nature of these factors and their interrelations are not well understood. This paper aims to integrate social, psychological, and biological literatures on relations between family/parental stress and pediatric asthma, and to illustrate the utility of multilevel systemic models for guiding treatment and stimulating future research. We used electronic database searches and conducted an integrated analysis of selected epidemiological, longitudinal, and empirical studies. Evidence is substantial for the effects of family/parental stress on asthma mediated by both disease management and psychobiological stress pathways. However, integrative models containing specific pathways are scarce. We present two multilevel models, with supporting data, as potential prototypes for other such models. We conclude that these multilevel systems models may be of substantial heuristic value in organizing investigations of, and clinical approaches to, the complex social–biological aspects of family stress in pediatric asthma. However, additional systemic models are needed, and the models presented herein could serve as prototypes for model development.     

人格与羞怯的关系：中介效应与调节效应

以752名大学生为被试,考察了人格基本维度与羞怯的关系以及社会支持在其中的中介作用和应对方式在其中的调节作用。结果发现：（1）神经质对羞怯有显著的正向作用,外向性对羞怯有显著的负向作用;（2）在外向性、神经质对羞怯的作用中,社会支持起着部分中介作用;（3）外向性对羞怯的负向作用受到自责的调节,神经质对羞怯的正向作用受到求助的调节并且神经质预测羞怯的过程中,社会支持的中介作用也受到求助的调节。     

I love you from the bottom of my hypothalamus: The role of stress physiology in romantic pair bond formation and maintenance

Monogamous pair bonds helped solve ancestral problems pertinent to our survival as a species. In order for these pair bonds to succeed, biological systems were co‐opted to support and reinforce attachment bonds through feelings of pleasure and reward. One of the major biological systems that may play an important role in the formation of romantic attachments is the stress response system (autonomic nervous system and hypothalamic–pituitary–adrenal axis). Research suggests attraction, mate preference, and emotional connectedness may be supported by the activation or inhibition of the stress response system. Further, as romantic relationships progress, new findings suggest partners' physiological patterns coalesce, potentially serving a regulatory function that reinforces the pair bond and affects overall well‐being. Based on this evidence, the current paper puts forth the Physiology of Romantic Pair Bond Initiation and Maintenance Model, which will provide researchers with a new perspective on the function of the stress response system in romantic relationships.     

Stress and eating: Definitions,findings, explanations,and implications

As high stress has become ubiquitous in modern society, so too has the prevalence of overweight and obesity, leading many to question whether these changes are related. Does stress affect eating? In this article, we summarize research investigating associations between stress and eating and describe the mechanisms that may explain such associations. Our review indicates that regardless of how stress and eating are operationalized, manipulated, or analyzed, and regardless of sample characteristics, associations of stress with eating behavior are observed quite consistently, with some variability due to individual differences. There is also evidence that the link between stress and eating involves both biological and behavioral processes. We discuss the possible longer term implications of stress–eating associations for weight gain, weight stigma, and subsequent health, and we identify specific methodological and conceptual advances needed to improve further research and application.     

Epigenetic Alterations Associated with War Trauma and Childhood Maltreatment

Survivors of war trauma or childhood maltreatment are at increased risk for trauma-spectrum disorders such as post-traumatic stress disorder (PTSD). In addition, traumatic stress has been associated with alterations in the neuroendocrine and the immune system, enhancing the risk for physical diseases. Traumatic experiences might even affect psychological as well as biological parameters in the next generation, i.e. traumatic stress might have transgenerational effects. This article outlines how epigenetic processes, which represent a pivotal biological mechanism for dynamic adaptation to environmental challenges, might contribute to the explanation of the long-lasting and transgenerational effects of trauma. In particular, epigenetic alterations in genes regulating the hypothalamus–pituitary–adrenal axis as well as the immune system have been observed in survivors of childhood and adult trauma. These changes could result in enduring alterations of the stress response as well as the physical health risk. Furthermore, the effects of parental trauma could be transmitted to the next generation by parental distress and the pre- and postnatal environment, as well as by epigenetic marks transmitted via the germline. While epigenetic research has a high potential of advancing our understanding of the consequences of trauma, the findings have to be interpreted with caution, as epigenetics only represent one piece of a complex puzzle of interacting biological and environmental factors. Copyright © 2015 John Wiley & Sons, Ltd.     

An Intricate Dance: Life Experience,Multisystem Resiliency,and Rate of Telomere Decline Throughout the Lifespan

Accumulation of life stressors predicts accelerated development and progression of diseases of aging. Telomere length, the DNA‐based biomarker indicating cellular aging, is a mechanism of disease development, and is shortened in a dose response fashion by duration and severity of life stressor exposures. Telomere length captures the interplay between genetics, life experiences and psychosocial and behavioral factors. Over the past several years, psychological stress resilience, healthy lifestyle factors, and social connections have been associated with longer telomere length and it appears that these factors can protect individuals from stress‐induced telomere shortening. In the current review, we highlight these findings, and illustrate that combining these ‘multisystem resiliency’ factors may strengthen our understanding of aging, as these powerful factors are often neglected in studies of aging. In naturalistic studies, the effects of chronic stress exposure on biological pathways are rarely main effects, but rather a complex interplay between adversity and resiliency factors. We suggest that chronic stress effects can be best understood by directly testing if the deleterious effects of stress on biological aging processes, in this case the cell allostasis measure of telomere shortening, are mitigated in individuals with high levels of multisystem resiliency. Without attending to such interactions, stress effects are often masked and missed. Taking account of the cluster of positive buffering factors that operate across the lifespan will take us a step further in understanding healthy aging. While these ideas are applied to the telomere length literature for illustration, the concept of multisystem resiliency might apply to aging broadly, from cellular to systemic health.     

The Influence of Culture, Community, and the Nested‐Self in the Stress Process: Advancing Conservation of Resources Theory

Conservation of Resources (COR) theory predicts that resource loss is the principal ingredient in the stress process. Resource gain, in turn, is depicted as of increasing importance in the context of loss. Because resources are also used to prevent resource loss, at each stage of the stress process people are increasingly vulnerable to negative stress sequelae, that if ongoing result in rapid and impactful loss spirals. COR theory is seen as an alternative to appraisal‐based stress theories because it relies more centrally on the objective and culturally construed nature of the environment in determining the stress process, rather than the individual's personal construel. COR theory has been successfully employed in predicting a range of stress outcomes in organisational settings, health contexts, following traumatic stress, and in the face of everyday stressors. Recent advances in understanding the biological, cognitive, and social bases of stress responding are seen as consistent with the original formulation of COR theory, but call for envisioning of COR theory and the stress process within a more collectivist backdrop than was first posited. The role of both resource losses and gains in predicting positive stress outcomes is also considered. Finally, the limitations and applications of COR theory are discussed.     

从端粒和端粒酶探析冥想对压力的缓解作用

冥想是一种维持自我注意的身心调节技术,是缓解因压力所致的抑郁、焦虑等消极情绪的有效方法。端粒是维持染色体稳定和完整的DNA片段,大量有关冥想对端粒及端粒酶活性影响的研究阐明,通常情况下压力人群经过冥想训练能提高端粒长度并增加端粒酶活性,这种改变与压力缓解密切相关。这一积极效果主要得益于皮质醇和炎症等生物因素及心理和环境等非生物因素。未来可以通过对比不同冥想练习的效果、增加追踪研究、多学科联合及扩大样本等找到最有利于提高端粒长度和端粒酶活性的冥想方式。     

The Biological Findings in Post-Traumatic Stress Disorder: A Review1

In this paper the authors review the literature on biological and treatment studies of post-traumatic stress disorder (PTSD) and present current unifying hypotheses regarding the pathophysiology. The psychophysiological studies stress overarousal, while endocrine studies suggest a decreased Cortisol production in denial and low symptom states with increases in highly symptomatic states. Suggestive evidence is provided that PTSD is associated with permanent changes in brain mechanisms involving the locus coeruleus, amygdala, and the hypothalamo-pituitary-adrenal axis. Drug treatments are promising but not fully satisfactory as yet. Directions for further research are provided.     

急性心理性应激诱发的神经内分泌反应及其影响因素

急性心理性应激源分别通过下丘脑-脑垂体-肾上腺轴(hypothalamus–pituitary–adrenal axis,HPAA)和交感神经-肾上腺髓质轴(sympathetic-adrenal medulla axis)诱发神经内分泌反应。唾液皮质醇被认为是检测急性心理性应激所诱发的HPA轴反应的稳定指标。以特里尔社会应激测试(Trier Social Stress Test,TSST)及其变式作为应激源, 以HPA轴的反应作为应激指标, 影响个体在急性心理性应激情境中发生特异性神经内分泌反应的因素主要包括人口统计学、环境和应激频率三大方面, 未来应加强急性心理性应激所诱发的神经内分泌反应的纵向研究。     

Caregivers's Stress Secondary to Raising Young Children with HIV Infection: A Preliminary Investigation

This study examined the impact of caring for a child with HIV infection on biological mothers (also infected with HIV), familial caregivers, and foster mothers. Levels of reported parenting stress, emotional functioning, the impact of the child's illness, and coping strategies utilized were compared. Participants were 35 female caregivers of young children (birth to 5 years) with HIV infection. Demographic variables reflected group differences: biological mothers were younger, foster mothers had greater monthly income, and children who were living with relatives were older. Group differences were noted with regards to parent related stress, anxiety, and depression with foster mothers reporting lower levels. The types of coping strategies utilized were generally similar across groups. Results suggest that young, biological caregivers of children with HIV infection may benefit from careful assessment with regard to their need for psychological intervention.     

Bedeutung von Stress bei chronischer Ersch?pfung

In this review article a novel approach to the explanation of chronic fatigue is presented. It has long been known that patients suffering from chronic fatigue syndrome (CFS) have reported increased occurrencesof traumatic experiences early in life compared to healthy individuals. Such experiences have been found to substantially impact on biological regulation processes later in life and thus alter sensitivity to stressful stimuli in adulthood. In CFS research has shown that patients display altered endocrine and immune stress regulation. A summary of current research in this area is given and the role of both childhood and adulthood stressors in biological regulation processes in CFS is discussed.