median path of Tobin’s q ratio displays regular, periodic cycles of bubbles and crashes reflecting an agency problem between … ; efficient markets ; financial bubbles ; stock markets ; booms and crashes ; Tobin’s q ; business cycles ; economic rents …

By combining (i) the economic theory of rational expectation bubbles, (ii) behavioral finance on imitation and herding … logperiodic power law (LPPL) model has been developed as a flexible tool to detect bubbles. The LPPL model considers the faster … diagnostic of bubbles. It embodies a positive feedback loop of higher return anticipations competing with negative feedback …

By combining (i) the economic theory of rational expectation bubbles, (ii) behavioral finance on imitation and herding …-periodic power law (LPPL) model has been developed as a flexible tool to detect bubbles. The LPPL model considers the faster … diagnostic of bubbles. It embodies a positive feedback loop of higher return anticipations competing with negative feedback …

. Economists should acknowledge the limits of our understanding of asset price bubbles and design policies accordingly. …

acknowledge the limits of our understanding of asset price bubbles and design policies accordingly. -- financial crisis ; mortgage …