Sunday, November 22, 2009

Dr. Petiti's lecture on designing for validity was another interesting topic on research design methods. She first described outcomes of a research design and then explained the measures that affects the outcome(s). The main focus of the was on understanding different types of study design and the factors that affect the study. As an example, she mentioned the study on breast cancer self examination, which was pretty interesting. The other examples that she mentioned were 'cellphones as the cause of brain cancer', and 'drinking as the cause of coronary heart disease'. The first example can't be done until the participants are forced to do BSE, and different law enforcement should be required. In all these cases randomization is required. But, we should also consider the risk of technology being changed in the future. That would definitely affect the study.

Prabal

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