Keynesian Issues and Economic Theory
澄清了凯恩斯宏观模型中短期价格与数量调整的性质，以及持续劳动过剩的可能原因，并指出不完全竞争和实际工资刚性导致的是古典失业，而名义惯性才是真正凯恩斯乘数的根源。
Recent research helped in clarifying the nature of short run price and quantfty adjustments 1n Keynesian macroeconomfc models, and the possible causes of a persistent labour excess supply.It fs argued, however, that theories involving imperfect competitfon and real wage "rigidfties" generate "Classical" unemployment, where multipliers act through supply side effects, while nominal inertia seems to be at the root of truly "Keynesian" multipliers.The appraisal contains also a nontechnical presentation of recent models of endogenous expectations-driven business fluctuations {cycles, "sunspots").Monetary polie.Y can have then persistent real effects under complete information C"money as sunspot").