The author, Ralf Ewert, discusses the economic effect of tightening accounting standards on restricting earnings management. He argues that tighter standards can lead to a decrease in accounting earnings management and an increase in real earnings management. The study also highlights the importance of considering the substitution effect, which may result in an increase in real earnings management as the quality of reported earnings improves. Additionally, the author emphasizes the need for further research on the interaction between accounting and real earnings management.