TY - JOUR AU - Farmer,Roger E.A. AU - Zha,Tao AU - Waggoner,Daniel F. TI - Understanding Markov-Switching Rational Expectations Models JF - National Bureau of Economic Research Working Paper Series VL - No. 14710 PY - 2009 Y2 - February 2009 UR - http://www.nber.org/papers/w14710 L1 - http://www.nber.org/papers/w14710.pdf N1 - Author contact info: Roger Farmer UCLA Department of Economics Box 951477 Los Angeles, CA 90095-1477 Tel: 310/825-6547 Fax: 310/825-9528 E-Mail: rfarmer@econ.ucla.edu Tao Zha Emory University 1602 Fishburne Drive Atlanta, GA 30322-2240 Tel: 404/723-3254 Fax: 404/727-4639 E-Mail: tzha@emory.edu Daniel F. Waggoner Federal Reserve Bank of Atlanta 1000 Peachtree Street N.E. Atlanta, Georgia 30309-4470 E-Mail: dwaggoner@frbatlanta.org AB - We develop a set of necessary and sufficient conditions for equilibria to be determinate in a class of forward-looking Markov-switching rational expectations models and we develop an algorithm to check these conditions in practice. We use three examples, based on the new-Keynesian model of monetary policy, to illustrate our technique. Our work connects applied econometric models of Markov-switching with forward looking rational expectations models and allows an applied researcher to construct the likelihood function for models in this class over a parameter space that includes a determinate region and an indeterminate region. ER -