Krahasoni metodat

	Vlerësimi i Politikave me Dizajnin e Diskontinuitetit të Regresionit	Diferenca-në-Diferenca (Diff-in-Diff)
Fusha	Inferenca kauzale	Ekonometri
Familja	Regression model	Regression model
Viti i origjinës	1960; policy evaluation applications widespread from 2000s	1994
Krijuesi	Thistlethwaite & Campbell (1960); popularized in policy evaluation by Lee & Lemieux (2010)	Card & Krueger (canonical 1994 application); Angrist & Pischke (textbook treatment)
Lloji	Quasi-experimental causal design	Causal inference / panel regression
Burimi themelues	Lee, D. S., & Lemieux, T. (2010). Regression Discontinuity Designs in Economics. Journal of Economic Literature, 48(2), 281-355.	Angrist, J. D., & Pischke, J.-S. (2009). Mostly Harmless Econometrics: An Empiricist's Companion. Princeton University Press. ISBN: 978-0691120355
Emërtime të tjera	Policy RDD, RD design in policy evaluation, regression discontinuity policy analysis, RDD policy impact	diff-in-diff, DiD, Farkların Farkı (Diff-in-Diff)
Të lidhura	5	5
Përmbledhja	Policy Evaluation Regression Discontinuity Design (Policy RDD) exploits a known eligibility threshold in a policy rule to estimate the causal effect of that policy on outcomes. Units just below the cutoff serve as a credible comparison group for units just above it, making RDD one of the most transparent quasi-experimental strategies for assessing what a policy actually achieves.	Difference-in-Differences is a causal-inference method that estimates the effect of an intervention by comparing how a treatment group and a control group change over time. Made famous by Card and Krueger's 1994 minimum-wage study and developed in Angrist and Pischke's Mostly Harmless Econometrics, it isolates the treatment effect as the difference between the two groups' before-after changes.