Panel-based ex post facto design
A panel-based ex post facto design tracks the same group of participants across multiple time points to examine how pre-existing differences in an independent variable — one the researcher did not manipulate — are associated with changes in an outcome over time. It merges the temporal depth of panel methodology with the causal-comparative logic of ex post facto research, enabling stronger causal inference than a single cross-sectional snapshot while remaining fully non-experimental.
Kilderegistrering
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- Kerlinger, F. N. (1986). Foundations of Behavioral Research (3rd ed.). Holt, Rinehart and Winston. · ISBN 978-0030417511
- Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. · ISBN 978-0761922452
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