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This chapter summarizes the knowledge on sleep and restitution. Sleep constitutes the recuperative process of the central nervous system. The use of the brain during wakefulness will lead to depletion of energy in the cortical areas locally responsible for activity. The level of depletion is monitored and sleep is initiated when critical levels are reached. The attempts to initiate sleep are perceived as sleepiness or fatigue. The ensuing sleep then actively restores brain physiology to normal levels. This also results in restored alertness, memory capacity, and mood. Also, peripheral anabolic processes (secretion of growth hormone and testosterone) are strongly enhanced and catabolic process (secretion of cortisol and catecholamines) are strongly suppressed. In the long run, reduced or impaired sleep leads to metabolic diseases, depression, burnout, and mortality. Stress and irregular hours are among the main causes of disturbed sleep.

Human performance, particularly that of the warfighter, has been the subject of a large amount of research during the past few decades. For example, in the Medline database of medical and psychological research, 1,061 papers had been published on the topic of “military performance” as of October 2003. Because warfighters are often pushed to physiological and mental extremes, a study of their performance provides a unique glimpse of the interplay of a wide variety of intrinsic and extrinsic factors on the functioning of the human brain and body. Unfortunately, it has proven very difficult to build performance models that can adequately incorporate the myriad of physiological, medical, social, and cognitive factors that influence behavior in extreme conditions. The chief purpose of this chapter is to provide a neurobiological (neurochemical) framework for building and integrating warfighter performance models in the physiological, medical, social, and cognitive areas. This framework should be relevant to all other professionals who routinely operate in extreme environments. The secondary purpose of this chapter is to recommend various performance metrics that can be linked to specific neurochemical states and can accordingly strengthen and extend the scope of the neurochemical model.

For decades organizational citizenship behavior (OCB) has been of interest to scholars and practitioners alike, generating a significant amount of research exploring the concept of what citizenship behavior is, and its antecedents, correlates, and consequences. While these behaviors have been and will continue to be valuable, there are changes in the workplace that have the potential to alter what types of OCBs will remain important for organizations in the future, as well as what types of opportunities for OCB exist for employees. In this chapter we consider the influence of 10 workplace trends related to human resource management that have the potential to influence both what types of citizenship behaviors employees engage in and how often they may engage in them. We build on these 10 trends that others have identified as having the potential to shape the workplace of the future, which include labor shortages, globalization, immigration, knowledge-based workers, increase use of technology, gig work, diversity, changing work values, the skills gap, and employer brands. Based on these 10 trends, we develop propositions about how each trend may impact OCB. We consider not only how these trends will influence the types of citizenship and opportunities for citizenship that employees can engage in, but also how they may shape the experiences of others related to OCB, including organizations and managers.

This chapter describes methodological issues that are relevant for research on recovery. We aim to provide an overview of methodological approaches that have been or can be used in recovery research, and to provide methodological guidelines that researchers may use in assessing the process of recovery. We argue that studies on recovery must be explicit about recovery settings, recovery processes (i.e., activities and experiences) and recovery outcomes. We describe typical operationalizations of these three perspectives and focus in more detail on potential measures of recovery outcomes. We give an overview of research designs including experiments and quasi-experiments, diary studies, and longitudinal field studies. We conclude by pointing to remaining challenges for researchers in the area of recovery.

Each of the four objectives can be applied within the military training environment. Military training often requires that soldiers achieve specific levels of performance or proficiency in each phase of training. For example, training courses impose entrance and graduation criteria, and awards are given for excellence in military performance. Frequently, training devices, training media, and training evaluators or observers also directly support the need to diagnose performance strengths and weaknesses. Training measures may be used as indices of performance, and to indicate the need for additional or remedial training.

African American males experience acute or chronic stress from discriminatory treatment and racial microaggressions, decreasing their biopsychosocial health. Racial microaggressions include but are not limited to merciless and mundane exclusionary messages, being treated as less than fully human, and civil and human rights violations. Racial microaggressions are key to understanding increases in racial battle fatigue (Smith, 2004) resulting from the psychological and physiological stress that racially marginalized individuals/groups experience in response to specific race-related interactions between them and the surrounding dominant environment. Race-related stress taxes and exceeds available resilient coping resources for people of color, while many whites easily build sociocultural and economic environments and resources that shield them from race-based stress and threats to their racial entitlements.

What is at stake, here, is the quest for equilibrium versus disequilibrium in a society that marginalizes human beings into substandard racial groups. Identifying and counteracting the biopsychosocial and behavioral consequences of actual or perceived racism, gendered racism, and racial battle fatigue is a premier challenge of the twenty-first century. The term “racial microaggressions” was introduced in the 1970s to help psychiatrists and psychologists understand the enormity and complications of the subtle but constant racial blows faced by African Americans. Today, racial microaggressions continue to contribute to the negative experiences of African American boys and men in schools, at work, and in society. This chapter will focus on the definition, identification, and long-term effects of racial microaggressions and the resultant racial battle fatigue in anti-black misandric environments.