Early macroeconomic models focused on modelling the relationships between aggregate variables, but as the relationships appeared to change over time macroeconomists, including new Keynesians, reformulated their models in microfoundations.
Dumu tan wi azzarnen n macroeconomy ijjan fal adaloj n iharojan jir aggregate variables mucham alwaq wa id iharojan t imuttiyan daɣ azzaman s macroeconomist tan ahan Keynesian tan wi eynaynen, olas nen amasuɣal n dumu tan nasan daɣ microfoundations