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Explore theory-based methodologies in large 'n' and small 'n' studies, including quantitative and qualitative approaches, cross-sectional, experimental, and longitudinal methods for insightful data analysis. Dive into counterfactual design and intervention strategies to isolate effects.
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Large & small ‘n’ considerations Theory-based approaches Large ‘n’ Methods Small ‘n’ Methods Typically quantitative, no counterfactual Quantitative, counterfactual Typically qualitative Case study Cross-sectional Quasi-experimental Comparative Experimental Longitudinal Same as cross-sectional, but data collected on at least two occasions to allow insights into the evolution of variables Develop the counterfactual ex-post Design an intervention with otherwise identical treatment & non-treatment groups to isolate its effects