Available at: http://www.bankofengland.co.uk/publications/Documents/speeches/2010/speech463.pdf Alloy, B and Ahrens, A (1987), “Depression and pessimism for the future: Biased use of statistically relevant information in predictions for self versus others” Journal of Personality and Social Psychology, Vol 52(2), pp. 366–378. Arthur, W B (2009) “The nature of technology: what it is and how its evolves”, Penguin. Banerjee, A and Duflo, E (2011), “Poor economics”, PublicAffairs. Barro, R and Gordon, J (1983), “A positive theory of monetary policy in a natural rate model”, Journal of Political Economy, Vol. 91, No.4 pp 589–610. Barton, D (2011), “Capitalism for the long term”, Harvard Business Review, March. Bernanke, B (2004), “The great moderation”, remarks at the Eastern Economic Association, Washington, DC, 20 February. Carr, N (2011), “The shallows: what the internet is doing to our brains”, Atlantic Books. Claessens, S, Kose, M A and Terrones, E M (2008), “What happens during recessions, crunches and busts?”, IMF Working Paper, WP/08/274. Coase, R (1960), “The problem of social cost” Journal of Law and Economics Vol. 3 pp. 1–44. Coase, R (1990), “The firm, the market and the law” University of Chicago Press. Coase, R (1995), “Essays on economics and economists”, University of Chicago Press. Coffey, S F, Gudleski, G D, Saladin, M E and Brady, K T (2003), “Impulsivity and rapid discounting of delayed hypothetical rewards in cocaine-dependent individuals”, Experimental and Clinical Psychopharmacology, Vol. 11, No. 1, 18–25. Crockett, A (2000), “Marrying the micro- and macroprudential dimensions of financial stability”, BIS Speeches, September.

The definition of price stability is therefore an essential feature of our monetary framework. Originally, when the euro was created, price stability was defined as a “less than 2%” increase in the overall price index. That would theoretically allow for zero or even negative inflation. The definition was described as “asymmetric,” meaning that the Eurosystem would react to excess inflation but would be indifferent to low inflation or even deflation. But that was never the intention. In 2003 the definition was adjusted in order to eliminate any ambiguity. Price stability is now defined as “less than but close to 2%.” The current definition is therefore fully symmetric. It makes it clear that the central bank is equally concerned by inflation that is too low or too high. This is not only a question of semantics. Central banks’ perceived objectives determine expectations and the behavior of private agents. If a central bank is seen as equally  BIS central bankers’ speeches  1  intolerant of both high and low inflation, the economy will more easily stabilize within the acceptable inflation range. Stability of inflation expectations has improved the capacity of euro-area economies to absorb the post-Lehman shock: While inflation became negative for a few months in 2009, expectations did not change and deflation was never a threat. This episode illustrates the credibility achieved by the Eurosystem in approaching price stability in a symmetric fashion. Together with the definition of price stability, the “two pillars” approach is another important feature of the Eurosystem’s framework.