In this article, three neo-Keynesian models with different assumptions regarding agents’ rationality are examined. Moreover, two types of monetary rules are considered in the analysis: one that adjusts interest rate in response to changes in inflation and another that reacts to inflation and changes in the output gap. Impulse response functions are graphed to understand the transmission mechanism of monetary policy in these models. Finally, some ideas behind neo-Keynesian models are criticized: the notion of rationality, methodological individualism, underlying ideas of commutative and distributive justice, the concept of welfare.En este artículo se trabajan tres modelos neokeynesianos con distintos supuestos e...