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Group Comparison Research Study

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Using randomized assignment for participants of a group comparison research study helps eliminate potential selection biases and allows for equal opportunity to either receive or not receive the intervention. When a study consists of a control and placebo group, it allows for the researcher to observe specific effects of a treatment or intervention (Beck, Andrasik, Arena, 1984). However, there are risks when implementing a placebo manipulation. For example, it can increase or even cause cultural mistrust between the client and researchers. This may lower or eliminate help seeking behaviors all together by diminishing their expectancy for change when placed in a placebo group of a study especially when there is an established discrepancy between mental health providers and a specific ethnic group. This in …show more content…
If using a clinical sample, an investigator must include more than just a psychiatric diagnosis for the inclusion and exclusion criteria (Beck, Andrasik, Arena, 1984). For example, Whaley (2001b) revealed in a research study that African Americans are disproportionately misdiagnosed and over diagnosed for mental disorders such as schizophrenia. They are also more likely to be underdiagnosed due to stigma associated with mental illness. This perceived stigma often deters African Americans from discussing their mental health concerns with family and even professionals. An investigator should also be conscious of how participants are recruited (Beck, Andrasik, Arena, 1984). Due to certain barriers affecting the provision of psychotherapy among African Americans such as high cost, participants may have previous exposure to the manipulation. In turn this could potentially skew data results as well as confuse any understanding or estimate about the effects of the intervention if their only means of treatment is by participating in various long term research

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