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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.
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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