Let’s play “Remember from Last Week?”•What are the three requirements to show causality?1.______________2.______________3.______________•In a study of the effectiveness of a parent education group on improving parenting skills, some parents may get parenting advice from friends during the experiment. What is the rival hypothesis?ScWk240 Ed Cohen Week 82
What is “research design”?•The decisions made in planning and conducting your research so as to best answer your research questions. –Research designs can be cross-sectional(“a point in time”), or longitudinal(“different points in time”)•Cross sectional designs are typical for descriptive research (e.g. “What is the prevalence of mental illness in the homeless population?”)•Longitudinal designs are typical in evaluative research. Testing a treatment almost always requires obtaining data at different points in timeScWk240 Ed Cohen Week 83
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