The Tragic Path of New Keynesianism
The Keynesian paradigm suffered in the stagflation of the 1970s. Price inflation and unemployment surged simultaneously, which resulted in broad skepticism of the old Keynesian models while loyal Keynesians scrambled to offer explanations. Moreover, it became apparent that the Keynesian consumption function didn’t hold up to empirical scrutiny—disposable income wasn’t as good of a predictor of aggregate consumption as early Keynesian models assumed.