Other types of research Survey (GCC survey ) Longitudinal (over long period of time) Historical (reconstructing the past) Twin studies (twins – Thomas Bouchard)Thomas Bouchard Treatment outcomes Treatment process (how/why treatment is effective) Program evaluation (Dare, Head Start) Prevalence ( % in population with a disorder) Incidence rate (# of new case in specific time period – PTSD in last 9 years?)
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