Purpose – This paper aims to study the formation and amplification mechanism of the financial crisis and business cycle and also discuss the related optimal rules for the central bank and government. Design/methodology/approach – This study is developed basically on a simple financial...

Purpose–This paper aims to study the formation and amplification mechanism of the financial crisis and business cycle and also discuss the related optimal rules for the central bank and government. Design/methodology/approach–This study is developed basically on a simple financial business...