Sensory Stress and Personal Agency: Emotional Casualty Rates amongst USAAF Heavy Bomber Crews over Europe during the Second World War

The findings of psychiatrists working for the USAAF have long dominated scholarship on aerial combat stress during the Second World War, including explanations why the emotional casualty rate aboard American heavy bombers varied by crew position. Critical examination suggests that the answers put forward are unsatisfactory, opening the way for an alternate analytic approach. Comprehending the different forms and levels of sensory stress heavy bomber crews experienced during combat missions in combination with different degrees of individual agency yields a more nuanced and convincing way of comprehending why some jobs were more psychologically demanding than others, and hence why casualty rates varied.     

Adaptive strategies or ideological innovations? Interpreting sociopolitical developments in the Jequetepeque Valley of Peru during the Late Moche Period

Environmental perturbations and social unrest are thought to have led to the reconstitution of traditional belief systems and hierarchical political relations on Peru’s North Coast during the Late Moche Period (550–800 AD). Ideological transformations are thus commonly interpreted as adaptive or reactive responses to social, political, and ecological disruptions. Nevertheless, religious practices directly shaped the formation of alternative power structures and ecological systems on the North Coast during the Late Moche Period. This is especially evident in Late Moche Jequetepeque, which witnessed the proliferation of non-elite ceremonial sites and small-scale agricultural facilities throughout the rural hinterland of the valley. Moche-inspired ritual performances orchestrated in the countryside created distinctive new forms of political order which structured economic activities and ecological behavior. In this article, the Jequetepeque case study is mobilized to reassess normative interpretations of the role of religious ideology in cultural adaptation and sociopolitical realignment.     

青海省高校中青年教师职业压力调查研究

文章在对青海省高校教师的职业压力进行调查的基础上,分析了这个群体的基本状况及他们所面临的问题,并提出缓解青海省高校中青年教师职业压力的建议。     

Health Consequences of European Contact in the Great Plains: A Comparison of Systemic Stress Levels in Pre‐ and Post‐Contact Arikara Populations

The biocultural effects of European contact varied considerably throughout the Americas. Some populations were decimated by colonialism, while others benefited from trade relationships and access to new technologies. It has been suggested that initial contact with European fur traders and explorers was economically favourable for Plains village populations, thereby facilitating a period of cultural florescence. In this study, we evaluate the hypothesis that Plains groups were better off than their predecessors during the initial contact period by comparing frequencies of enamel hypoplasia, cribra orbitalia, and porotic hyperostosis in pre‐ and post‐contact Arikara skeletal assemblages. We included both juveniles and adults in our sample to capture variation in the stress experience of different segments of the population. Our analysis revealed similarly low frequencies of cribra orbitalia in the pre‐ and post‐contact groups and no observed cases of porotic hyperostosis. Enamel hypoplasia, however, was significantly more prevalent among post‐contact Arikara villagers when compared to their pre‐contact counterparts, which suggests that stress levels were higher after European contact. Additionally, enamel hypoplasia was most common among post‐contact juveniles. The elevated frequency of enamel hypoplasia in the post‐contact sample combined with the low frequencies of cribra orbitalia and porotic hyperostosis suggests that disease stress, rather than nutritional deficiencies, was likely responsible for the decline in overall health following European contact. These results also suggest that juveniles are sensitive indicators of systemic stress within a population and should be included in bioarchaeological analyses of prehistoric health when available. Copyright © 2015 John Wiley & Sons, Ltd.     

The New ‘Coimbra Method’: A Biologically Appropriate Method for Recording Specific Features of Fibrocartilaginous Entheseal Changes

This paper presents a revised version of the Coimbra method for recording fibrocartilaginous entheses. The method itself is the only biologically appropriate recording method for fibrocartilaginous entheses that scores features separately, thereby ensuring that the aetiology of individual features can be studied. The method divides the enthesis into two zones, scoring the relevant features in each zone. These features represent either bone formation or bone destruction and include erosive lesions, fine and macro‐porosity, and cavitations. The revised method includes a new feature, textural change, which is scored as absent or present when it involves 50% or more of the surface. All other features are now scored as zero (absent), one or two with the higher score representing greater expression of the feature. This change in scoring has led to the reduction of inter‐observer error with approximately 80% agreement for overall feature scores for both the common extensor origin and subscapularis insertion. The simplification of the scores and the reduction in inter‐observer error mean that the method is now recommended for widespread use. Copyright © 2015 John Wiley & Sons, Ltd.     

Biocultural Consequences of Spanish Contact in the Lambayeque Valley Region of Northern Peru: Internal Enamel Micro‐Defects as Indicators of Early Life Stress

The present study utilises dental histological methods to analyse enamel micro‐defects as indicators of early life stress in indigenous Muchik individuals interred at two sites: La Capilla Santa María Magdalena de Eten (CSMME) (n = 15) and La Capilla del Niño Serranito (CNS) (n = 15), both located in the Lambayeque Valley region of northern Peru. Individuals interred at CNS date to the Early Colonial Period (AD 1533–1610), and individuals interred at CSMME date to the Middle/Late Colonial Period (AD 1625–1760), thus permitting comparison of childhood stress events between the Early and Middle/Late Colonial Periods. Results reveal a high prevalence of Wilson bands at both sites, although a lower prevalence at the CSMME was observed in comparison with the CNS. This indicates that, over time, Muchik individuals in this town may have been able to acclimate to life under Spanish oppression. Stress chronologies suggest that early life stress possibly resulted from inadequate and less than desirable food and/or water available for supplemental feeding during early infancy, especially around the ages of 4 and 5 months. Furthermore, results show that individuals with enamel defects in the form of Wilson bands at both the CNS and CSMME had an earlier mean age‐at‐death (9.6 and 4.05 years, respectively) in comparison with those without observed Wilson bands (19.75 and 8.8 years, respectively). These results underscore the importance of not only regional and temporal studies of the biological consequences of Spanish contact in the Americas but also of investigating the relationship between early life stress and adult health and longevity in archaeological populations. Copyright © 2015 John Wiley & Sons, Ltd.     

部门管理人员感知的组织支持与组织氛围对旅游企业员工角色压力的影响

欧美学者普遍认为,角色压力是影响员工服务态度和服务行为的一个极为重要的因素,包括角色负担、角色冲突、角色模糊等3个组成成分.本文对我国11个地区的33个旅游企业进行了一次实证研究,检验部门管理人员感知的组织支持、企业的支持型领导氛围、授权氛围和员工服务行为评估氛围对员工角色模糊的影响.多层次线性模型分析结果表明,部门管理人员感知的组织支持会通过企业的支持型领导氛围,间接影响员工感知的角色模糊.企业的支持型领导氛围会通过企业的授权氛围,间接影响员工感知的角色模糊.此外,部门管理人员感知的企业支持还会调节员工感知的角色负担和角色冲突对他们的角色模糊的影响.     

What do muscle marker ruggedness scores actually tell us?

Musculoskeletal stress markers (MSM) have been used to reconstruct activity patterns and labour intensity of past populations. Age and size have been found to correlate with MSM, and these aspects should be considered in activity reconstructions. The aim of this study was to find out the nature and the effects of labour intensity, age and size on MSM. Study material were skeletons (N = 108) of individuals of known age, sex and occupation housed at the Natural History Museum, Finland. MSM were scored for Pectoralis major, Deltoid, Teres major and Biceps brachii. These scores were combined to reflect total activity of an individual. Geometric mean of humeral measurements was used as a size indicator and radial tuberosity size was used as a muscle size indicator. Factors explaining MSM were studied using ANCOVA. This included age, size, muscle size, sex, labour intensity, and their interactions. Age and muscle size were the most significant factors explaining MSM, where muscle attachment areas and MSM grow with advancing age. Muscle attachment areas and skeletal frame size were also found to correlate. Least squares regression parameter estimates were used to study the effects of labour intensity, sex and side on MSM. It was found that in early life scores are higher in heavy labour group, but there is less age‐related increase in these scores. This could mean that bone is unable to respond to heavy and continuous loading with surface structure. Therefore labour intensity cannot be reliably recorded in old individuals. Also age and size (as reflected in muscle attachment area) affect MSM and these aspects should be considered before making assumptions on labour intensity. Copyright © 2009 John Wiley & Sons, Ltd.     

Enthesopathies and activity patterns in the Early Medieval Great Moravian population: Evidence of division of labour

Bone remodelling in the areas of entheses is frequently supposed to be associated with physical stress and the activity patterns of ancient populations. The main aim of this study was to analyse the prevalence of enthesopathies among individuals living in different life conditions. A total of 197 individuals from the Early Medieval (9th century) Mikulčice site were analysed for enthesopathies ‐ 117 adult individuals from Mikulčice castle and 80 individuals from its hinterland. While the inhabitants of the castle were probably ranked among the higher echelons of society, the hinterland was predominantly inhabited by a farming population. It is hypothesized that individuals from the castle were exposed to lower physical stress than individuals from the hinterland. 9 fibrocartilaginous entheses of the upper and lower limbs were evaluated. Enthesopathies occurred in at least one enthesis in 76% of individuals younger than 50 years of age. Significant differences were observed in the occurrence of enthesopathies between castle and hinterland. Males from the agricultural hinterland show the highest prevalence of enthesopathies of all the population groups, while the lowest prevalence of the marker was recorded in males from the castle. Females in the castle were more affected by entheseal changes than females from the hinterland. Sexual dimorphism was more evident in the hinterland. The present study confirmed presumptions based on the archaeological finds, especially for males. This hypothesis cannot be accepted for females. We may suppose that in the 9th century, women living in Mikulčice castle did not represent a privileged social class. Copyright © 2010 John Wiley & Sons, Ltd.     

Limb bones asymmetry and stress in medieval and recent populations of Central Europe

Monitoring the degree of asymmetry in different parts of the human body can contribute to population studies, as it may be connected indirectly with the social structure, living conditions, and also with biomechanical stress affecting the person. Analysis of asymmetry may also assess preferential use of the right or left of the body during specific activities. This study is based on the measurements of bones of the upper and lower limbs of skeletons derived from the remarkable medieval cemeteries of Mikulčice‐Kostelisko (78 male, 132 female) and Prušánky (66 male, 69 female) (9th–12th centuries AD), and a series of skeletons representing a recent population from Bohemia (143 male, 157 female). The objective was to assess directional asymmetry (DA), fluctuating asymmetry (FA) and antisymmetry (AS) of the dimensions of the evaluated bones, and to use these data to compare the characteristics of the medieval and recent populations. DA was recorded in most dimensions. In the upper limb, the humerus exhibited the greatest expression of asymmetry, and, with the exception of the clavicle, DA was always more pronounced on the right side. Conversely, DA was less prevalent in the lower limb bones. It was more pronounced on the transverse, sagittal and circumferential dimensions of the diaphyses and epiphyses than on the length, and in most cases it was on the left side. The FA values were very low, and almost negligible in relation to the size. Nevertheless, FA was markedly more frequent on the lower than on the upper limb. In contrast to the medieval population, the recent population had higher FA and DA values. Thus, we propose that people from this medieval population were subjected to lower developmental stress than the recent sample. Copyright © 2008 John Wiley & Sons, Ltd.