Description

This Master Prompt focuses on determining whether relationships estimated from panel data remain stable throughout the observation period or change because of economic crises, policy interventions, technological transitions, institutional reforms, financial disruptions, pandemics, environmental shocks, market restructuring, changes in connectivity, or other structural developments. It guides researchers in distinguishing stable parameters from parameter instability; abrupt from smooth change; common from unit-specific or heterogeneous change; intercept from slope instability; deterministic trends from genuine structural evolution; and observed event-defined regimes from data-driven changes whose substantive causes remain uncertain. The central objective is to prevent researchers from reporting a single full-sample coefficient as though it represented the entire study period when the underlying relationship may have evolved materially.