The authors describe the policy and administrative-practice implications of implementing evidence-based services, particularly in public-sector settings. They review the observations of the contributors to the evidence-based practices series published throughout 2001 in Psychiatric Services. Quality and accountability have become the watchwords of health and mental health services; evidence-based practices are a means to both ends. If the objective of accountable, high-quality services is to be achieved by implementing evidence-based practices, the right incentives must be put in place, and systemic barriers must be overcome. The authors use the framework from the U.S. Surgeon General's 1999 report on mental health to describe eight courses of action for addressing the gap between science and practice: continue to build the science base; overcome stigma; improve public awareness of effective treatments; ensure the supply of mental health services and providers; ensure delivery of state-of-the-art treatments; tailor treatment to age, sex, race, and culture; facilitate entry into treatment; and reduce financial barriers to treatment.

Exposure to trauma, particularly violent victimization, is endemic among clients with severe mental illness. Multiple psychiatric and behavioral problems are associated with trauma, but posttraumatic stress disorder (PTSD) is the most common and best-defined consequence of trauma. Mental health consumers and providers have expressed concerns about several trauma-related issues, including possible underdiagnosis of PTSD, misdiagnosis of other psychiatric disorders among trauma survivors, incidents of retraumatization in the mental health treatment system, and inadequate treatment for trauma-related disorders. Despite consensus that trauma and PTSD symptoms should be routinely evaluated, valid assessment techniques are not generally used by mental health care providers. PTSD is often untreated among clients with serious mental illness, or it is treated with untested interventions. It is important that policy makers, service system administrators, and providers recognize the prevalence and impact of trauma in the lives of people with severe mental illness. The development of effective treatments for this population requires a rational, orderly process, beginning with the testing of theoretically grounded interventions in controlled clinical trials.

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Internal medicine physicians poorly estimate the charges for diagnostic tests but have a strong desire to improve their knowledge, suggesting a possible intervention to improve the cost-effectiveness of medical care.