1--- 2meta: 3 date: false 4 reading_time: false 5title: "Difference in Differences (DiD)" 6date: 2023-10-05 7description: "A methodological tool used to estimate the causal effect of a treatment or policy intervention using panel data." 8tags: ["Econometrics", "Causal Inference", "Quantitative Methods", "Policy Analysis"] 9--- 10 11## Background 12 13Difference in Differences (DiD) is an econometric technique used to estimate the causal effect of a treatment, policy intervention, or event. It stands out for its capacity to account for both temporal and individual variations by utilizing panel data, which consists of repeated observations over time for the same subjects.