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A full understanding of psychological trauma requires an acknowledgment of the considerable differences that exist among individuals exposed to potentially traumatizing events. Although all are perhaps vulnerable to developing the now well-defined symptoms of posttraumatic stress disorder (PTSD), it is also true that people who have endured calamity, violence, and deprivation differ from one another in myriad ways, such as in the likelihood of their exposure to such events and in their vulnerability to symptom development, in the nature and severity of their symptoms, and in the extent to which their early onset symptoms persist and do or do not develop into signs of severe psychopathology. Those who become symptomatic differ as well in their interpretations of both their experiences and their symptoms and in the avenues they pursue to secure symptom relief. These differences reflect a complex interplay of many influences, including the nature and chronicity of the events in question; demographic factors such as age, race, class, and gender; neurobiological mediators of hardiness and vulnerability; the influence and stability of relevant social, cultural, and political contexts; and any number of environmental factors that may support or impede access to natural support, comforting beliefs, and trauma-informed clinical care. Among a vast population of trauma survivors worldwide are many, treated and untreated, who do not develop complete or persistent PTSD despite their experience and many as well who simultaneously exhibit both remarkable strengths and pronounced symptomatic responses. These groups have created an interest in the origins and indices of risk and resilience in trauma survivors.

The Ecological Perspective of Community Psychology

Relevant to recent inquiries into the nature and nurture of resilience in trauma survivors is a longstanding interest among community psychologists in the promotion of wellness, the influence of context on psychological functioning, and the empowering possibilities of ecologically informed intervention at individual, community, and societal levels. Particularly relevant to the understanding of resilience in trauma survivors is the ecological perspective guiding their work.

Briefly stated, community psychologists share with field biologists the view that organisms live (i.e., survive, thrive, or decline) in interdependence with their environments. Applying an “ecological analogy” to human behavior, community psychologists suggest that human communities, like other living environments, can be described in terms of their adaptive qualities and in the ways in which they develop, preserve, exchange, and sometime deplete resources vital to community health and well-being. Community resources include the many and diverse people who compose a community's membership and the competencies, values, beliefs, and traditions they bring to community life; the formal and informal settings that define community membership and nurture the attributes and behaviors essential to cohesive community; and the events that mark, celebrate, and sometimes challenge a community's identity relative to the larger world. One aim of ecologically informed community intervention might be to enhance the resources a community is able to offer its members; another might be to broaden the reach and improve the accessibility of these resources to include at-risk or disenfranchised segments of the larger community; and still another might be to engage community members in challenging dialogue, calling on a community to literally rethink its needs, its values, and its identity.

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