Evaluating the Impact of Economic Policy Changes on Unemployment Rates
Instruction: Design a causal study to assess the effect of a significant change in economic policy on national unemployment rates.
Context: Candidates must navigate the complexities of economic data and policy impacts, showcasing their ability to discern causality in macroeconomic indicators.
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I would specify the policy, implementation date, population, outcome definition and follow-up period. Use comparable unemployment measures and investigate revisions, seasonality, anticipation and concurrent shocks. A simple before/after change does not isolate the policy effect. Difference-in-differences requires a credible untreated comparison and a defensible parallel-trends assumption for the untreated potential outcomes...