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Explore various forms of quantitative research studies, including descriptive, relational, and causal designs. Learn about internal validity and how to establish cause and effect relationships while identifying threats to validity in research design.
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Research Design: Causal Studies • Quick Review: Three general forms of quantitative research studies • Descriptive: Describes a situation • Relational : Relationship between variables • Causal: Seeks to show a cause and effect. • Internal Validity: The approximate truth of inferences regarding cause-effect or causal relationships. • Establishing Cause & Effect • Single-Group Threats • Multiple-Group Threats • “Social” Interaction Threats • Research Design & Design Notations