This paper examines Roxane Cohen Silver's 2004 longitudinal study on emotional, cognitive, and social responses to the September 11 terrorist attacks across the United States. Drawing on nearly two years of anonymous online survey data collected from approximately 2,000 individuals across four states, the review covers the study's research design, the challenges researchers faced — including sampling difficulties, time constraints, and untested assumptions — and the major findings regarding variability in post-traumatic response, the role of prior mental health diagnoses, and the heightened vulnerability of previously traumatized individuals to future traumatic events.
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Silver, Roxane Cohen (2004). Conducting research after the 9/11 attacks: Challenges and results. Families, Systems & Health, 22(1), 47–51.
This study investigates three central questions: Over time, what were the emotional, cognitive, and social responses to the 9/11 terrorist attacks across the United States? Are there predictors for these reactions? Do previously traumatized individuals respond differently than others?
This was a longitudinal study, meaning the sample population was interviewed multiple times over many months to track how their reactions changed. The researchers used an anonymous online survey to collect data from nearly 2,000 individuals in New York, Oklahoma, Colorado, and Miami. Assessments were conducted periodically for two years following the 9/11 tragedy.
Finding a sample of traumatized populations in real time is challenging. In some cases, when traumatized individuals have sought treatment, the institutions providing that care may actively work to "protect" those individuals from serving as research subjects. Institutional Review Boards (IRBs) also work to protect traumatized individuals and may not approve research that seeks to interview them using sensitive questions.
Once a general sample population has been identified and the project has been approved, it is still very time consuming to establish rapport with individuals who are suffering from trauma. For this kind of research to be effective, researchers must gain the trust and confidence of participants. Careful planning, focus group research, and preliminary investigation may help to build this trust, but all of those steps add time and expense to the research process.
Researchers may hold their own assumptions about how people react to trauma, and these assumptions can negatively affect their neutrality. Such assumptions may also influence the design of the study — shaping the types of questions asked and the way researchers interact with subjects. Misconceptions about trauma are widespread; in reality, people react very differently to stressful events in their lives.
"Variability, prior trauma, and heightened vulnerability"
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