Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

For example, during economic downturns ... According to Keynesian economics, state intervention is necessary to moderate the booms and busts in economic activity, otherwise known as the business cycle ...

It has remained—as have so many fascinating theories in economics, physics ... There is, furthermore, a persistent feeling that the life cycle concept adds luster and believability to the ...