SOC221 Lecture Notes - Lecture 5: Treatment And Control Groups, Experiment, Quasi

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Research design is a broad structure that guides collection and analysis of data. Variables can be observed and measured at di erent levels and amounts. Sex, marital status, income or crime types: independent variables cause that changes (poverty)/made by variable, dependent variable e ect what we are trying to explain (crime, control variable doesn"t vary but impacts iv and dv (gender) Attribute representation of a variables categories or numerical values: marital status (single, married, common-law, separated, divorced, widowed) Both have di erent ontological, epistemological, and methodological assumptions. Each method is better suited for particular research. Friday, october 5, 2018: research environment is kinda arti cial. Examine e ect of an independent variable on dependent variable. Determine whether a stimulus or intervention made an impact. Manipulate iv to see e ect on dv. Treatment group vs. control group rely on random assignment: equal chance of being assigned to treatment group (manipulated) or control (not manip)

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