Locus of control in US combat veterans: Unique associations with posttraumatic stress disorder 5-factor model symptom clusters

Exploring the impacts of perceived locus of control on post-traumatic stress disorder among disaster survivors: A systematic review

WHAT IS KNOWN ON THE SUBJECT?: It was previously reported that perceived external locus of control may exacerbate depressive symptoms, is associated with anxiety, boosts stress and general mental distress and weakens resilience against traumatic situations or difficulties. WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE?: Those with a higher external locus of control are more prone to develop PTSD symptoms since the perceived external locus of control is among the predictors of PTSD. An internal locus of control is considered important in preventing PTSD, although an external locus of control appears to be a variable that causes/increases the prevalence of PTSD. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: It is known that nurses are deployed in clinical and fieldwork during disaster and assume key roles both interventional practices and psychosocial education. Thus, it is of particular importance for mental health nurses to be aware of the locus of control in themselves, their colleagues, and the community before, during and after disasters to be able to combat the risk/presence of PTSD.

ABSTRACT

AIM: The present systematic review explored the impacts of perceived locus of control on PTSD among individuals experiencing disasters.

METHOD

This is a systematic review study carried out through a search of the relevant research published in English over the period December 2021 to April 2022. Accordingly, we sought the studies to review on the Web of Science, PubMed, Scopus, Cochrane and Google Scholar databases using the keywords "Child, Children, Adolescent, Adolescence, Adult, Aged, Elderly, Post-Traumatic Stress Disorder, PTSD, Internal-External Control, Locus of Control, Disasters, Natural Disasters."

RESULTS

A total of 1.011 studies were found in the five databases using the keywords above. Following the exclusions, the remaining six studies were recruited for this systematic review. The six studies in question addressed earthquakes (2), hurricanes (1), wildfires (1), SARS (1) and fireworks explosions (1). In the study with wildfire survivors, there was a weak significant association between external locus of control and PTSD among those directly exposed to the disaster (r = .15, p < .01). The study with survivors of the SARS epidemic demonstrated that those with a high perceived chance (external) locus of control suffered PTSD (p = .001). An internal locus of control is considered important in preventing PTSD, although an external locus of control appears to be a variable that causes/increases the prevalence of PTSD.

CONCLUSION

It was concluded that perceived locus of control is related to PTSD in individuals experiencing a disaster. The additional evidence was that post-disaster PTSD among those with a high perceived external locus of control is stronger than those with a high perceived internal locus of control.

Perceived control, loneliness, early-life stress, and parents' perceptions of stress

The COVID-19 pandemic has highlighted the importance of understanding what contributes to individual variability in experiences of stress. Increases in stress related to the pandemic have been especially pronounced in parents, indicating a need for research examining what factors contribute to parents' perceptions of stress. Here, we assessed the relationship between parents' perceptions of stress, control, loneliness, and experiences of childhood trauma in two populations of caregivers. In Study 1, we examined the relationship between perceptions of stress, control, loneliness, and history of early stress, along with indices of socioeconomic risk and resting parasympathetic nervous systema activity, which has been linked to variability in perceptions of stress, in caregivers of young children. Perceived control, loneliness, childhood stress, and resting parasympathetic nervous system activity predicted caregivers' stress. In Study 2, we replicated these initial findings in a second sample of caregivers. Additionally, we examined how these processes change over time. Caregivers demonstrated significant changes in perceptions of control, loneliness, and stress, and changes in control and childhood trauma history were associated with changes in perceptions of stress. Together these results indicate the importance of assessing how caregivers perceive their environment when examining what contributes to increased risk for stress. Additionally, they suggest that caregivers' stress-related processes are malleable and provide insight into potential targets for interventions aimed at reducing parents' stress.

Flare-Ups in Crohn's Disease: Influence of Stress and the External Locus of Control

(1) Background: The aim of this study was to explore the role of perceived stress and the health locus of control in Crohn's disease and their influence upon the development of flare-ups of this disease. (2) Methods: Stress and the external locus of control were evaluated in a sample of 64 Crohn's patients (flare-up phase versus latency phase). The perceived stress scale (PSS-14) and the multidimensional health locus of control scale were the measurement instruments used. (3) Results: The results indicate that the patients have high stress levels during a flare-up (26.13; 27.44; 28.79; 29.67); high stress levels (28.07; 29.67; 27.44; 28.07) if they have a high external locus of control; and that the external locus of control and stress levels have a significant influence upon the existence of flare-ups in those patients with low external locus of control levels (χ2 = 11.127; df = 1: p < 0.001). (4) Conclusions: Actions aimed at reducing stress and external locus of control levels are necessary in Crohn's disease.

Cross-Sectional Study of Factors Influencing Perceived Threat and Stress among the Arab Minority in Israel during the COVID-19 Pandemic

This study aimed to examine the impact of the locus of control, coping strategies and loneliness on perceived threat and stress among the Arab minority in Israel during the first COVID-19 closure. This was a cross-sectional online study, with 486 participants who completed a questionnaire measuring the study variables during the period of 28-31 March 2020. Statistical analyses included t-tests and analyses of variance. Means, standard deviations and intercorrelations for the study variables were calculated. The results revealed a moderate-low level of stress and a moderate-high level of perceived threat. Higher stress was related to higher perceived threat, a greater external locus of control, lower problem-focused coping, higher emotion-focused coping and social support-seeking and higher loneliness. Perceived threat was positively related to both problem-focused coping and emotion-focused coping. The results show that the Arab population in Israel coped as a strong minority group. This study contributes to our understanding of how minority groups cope in the current epidemic and to the identification of effective strategies for reducing stress during this challenging period. The study's results may help devise intervention programs that foster more effective coping capabilities among this and other minority populations.

Cognitive Coping Reduces Posttraumatic Stress Symptoms, Especially in the Context of Self-Blame

Following a traumatic event, coping strategies may affect the natural course of posttraumatic stress symptoms (PTSS). In particular, cognitive coping strategies (how one thinks about stressors) may reduce PTSS by increasing individuals' perceived control over events, appraising them as less threatening, particularly for individuals who experience self-blame after trauma. Individuals who experience a traumatic event (n =344) completed assessments at baseline (T1), one month (T2), and two months (T3). We tested whether T1 cognitive coping strategies (positive reinterpretation, acceptance, religious coping) predicted reduced T3 PTSS and whether this reduction was mediated by increased perceived control at T2. We tested whether this effect was particularly strong for individuals experiencing self-blame. Positive reinterpretation predicted decreases in, religious coping predicted increases in, and acceptance had no direct effect on PTSS. Overall, acceptance showed the greatest potential for reducing PTSS through increased perceived control over one's life. In a fully moderated mediation model, positive reinterpretation significantly interacted and acceptance marginally interacted with self-blame to predict increased perceived control and, subsequently, decreased T3 PTSS. Specifically, acceptance and positive reinterpretation were most helpful for those with higher levels of self-blame. Religious coping interacted with self-blame to predict decreased perceived control and subsequent increased PTSS. For trauma survivors experiencing self-blame, cognitive coping strategies that utilize compassionate self-talk, such as positive reinterpretation and acceptance, may be particularly helpful at increasing perceived control after trauma, while religious coping may have deleterious effects.

US Army Drill Sergeants: Stressors, Behavioral Health, and Mitigating Factors

INTRODUCTION

The role of the drill sergeant is one of the most challenging within the US Army, involving unusually long hours and little time off, for a minimum of 2 years. The current study sought to examine the behavioral health of this population and identify risk factors that might be addressed by policy changes.

MATERIALS AND METHODS

In total, 856 drill sergeants across all Army basic training sites completed surveys from September to November of 2018. Drill sergeants identified factors that had caused stress or worry during their assignment. Rates were measured for behavioral health outcomes including depression, insomnia, anxiety, burnout, functional impairment, alcohol misuse, aggression, and low morale. Potential risk and resilience factors included time as a drill sergeant, sleep, route of assignment, general leadership, health-promoting leadership, and drill sergeant camaraderie. The study was approved by the Walter Reed Army Institute of Research Institutional Review Board.

RESULTS

The most commonly experienced stressors were finding time to exercise, lack of sleep, and long work hours. Percentages of drill sergeants meeting behavioral health screening criteria were 19% for depression, 27% for moderate-to-severe insomnia, 14% for generalized anxiety disorder, 48% for high burnout, 32% for functional impairment, 35% for moderate alcohol misuse, 32% for off-duty aggression, and 25% for low morale. Rates for most outcomes were associated with time spent as a drill sergeant, with behavioral health issues peaking during 13-18 months. Poorer outcomes were also associated with fewer hours of sleep and initial unhappiness regarding involuntary assignment to the role of drill sergeant, while better outcomes were associated with higher ratings of general leadership, health-promoting leadership, and drill sergeant camaraderie.

CONCLUSIONS

This study is the first to examine behavioral health and morale of drill sergeants and to identify risk and resilience factors. Suggestions for policy changes include increasing the number of drill sergeants to decrease workload and allow sufficient time for recovery and sleep.

Predicting Perceived Stress Related to the Covid-19 Outbreak through Stable Psychological Traits and Machine Learning Models

The global SARS-CoV-2 outbreak and subsequent lockdown had a significant impact on people's daily lives, with strong implications for stress levels due to the threat of contagion and restrictions to freedom. Given the link between high stress levels and adverse physical and mental consequences, the COVID-19 pandemic is certainly a global public health issue. In the present study, we assessed the effect of the pandemic on stress levels in N = 2053 Italian adults, and characterized more vulnerable individuals on the basis of sociodemographic features and stable psychological traits. A set of 18 psycho-social variables, generalized regressions, and predictive machine learning approaches were leveraged. We identified higher levels of perceived stress in the study sample relative to Italian normative values. Higher levels of distress were found in women, participants with lower income, and participants living with others. Higher rates of emotional stability and self-control, as well as a positive coping style and internal locus of control, emerged as protective factors. Predictive learning models identified participants with high perceived stress, with a sensitivity greater than 76%. The results suggest a characterization of people who are more vulnerable to experiencing high levels of stress during the COVID-19 pandemic. This characterization may contribute to early and targeted intervention strategies.

[Influence of post-traumatic stress disorder on asthma]

INTRODUCTION

Exposure to a traumatic event may not only lead to a large variety of mental disorders, such as post-traumatic stress disorder (PTSD) but also respiratory symptoms and/or respiratory diseases, as asthma.

OBJECTIVES

Systematic literature review of data on the impact of post-traumatic stress disorder on asthma.

DOCUMENTARY SOURCES

Medline, on the period 1980-2018 with the following keywords: "PTSD" or "post-traumatic stress disorder" or "post-traumatic stress disorder" and "asthma", limits "title/abstract"; the selected languages were English or French. Among 141 articles, 23 abstracts have given use to a dual reading to select 14 studies.

RESULTS

While PTSD may develop 4 weeks after being exposed to a traumatic event during which the physical integrity of the person has been threatened, it might also develop several months or years later. PTSD has been reported to be a risk factor for asthma and also a factor that might enhance a preexisting asthma. It is also important to note that this relation has been highlighted among several populations, traumatic events and regardless the gender and/or cultural factors. Despite its impact on the development of asthma, in asthmatic patients, PTSD may be responsible for poor asthma control, increased rates of healthcare use (visit in the emergency department and/or hospitalization for asthma) and poor asthma-related quality of life. The study of the association between PTSD and asthma have to take into account some potentially confounding factors, such as smoking status and dust exposure (e.g.: asthma following the terrorist attacks of the World Trade Center). Less is known regarding the potential mechanisms involved in the association between PTSD and asthma. Several factors including the nervous system, the hypothalamo-pituitary-adrenal axis, the inflammatory response and the immune system may explain the association.

CONCLUSION

PTSD is a risk factor for the development of asthma and for the worsening of preexisting asthma. In asthmatic patients, it is of primary importance to systematically screen potential PTSD that might be developed after a traumatic event or a preexisting traumatic condition. Moreover, after exposure to a traumatic event, a special attention needs to be paid to somatic reactions such as asthma. The majority of studies having been conducted on American samples, replicating studies among European samples appears of prime importance in order to add a body of knowledge on the association between somatic and psychiatric conditions.