“…Supply siders and real business cycle specialists approach Japan’s ‘lost decade’ of the 1990s with emphasis on this underlying productivity slowdown, treating it as exogenous (see, e.g., Hayashi & Prescott, 2002; Morana, 2004; Kobayashi & Inada, 2005). The sharpness of Japan’s growth decline can be further explained by a delay in the recognition of this diminished growth potential and therefore over‐optimistic capital accumulation through the 1980s and early 1990s (Wilson, 2000; Beaudry & Portier, 2004, 2007). The arrival of more modest expectations then saw a loss in capital value and a decline in both investment and consumption (Ramaswami & Rendu, 1999).…”