Antonakakis, NikolaosCunado, JuncalGil-Alana, Luis A.Gupta, Rangan2016-10-242016-11Antonakakis, N, Cunado, J, Gil-Alana, LA & Gupta, R 2016, 'Is inflation persistence different in reality?', Economics Letters, vol. 148, pp. 55-58.0165-1765 (print)1873-7374 (online)10.1016/j.econlet.2016.09.003http://hdl.handle.net/2263/57410This study examines the inflation persistence using both online and official price indexes in Argentina, Brazil, China, Japan, Germany, South Africa, the UK and the US, using fractional integration technique. The main results suggest that the degree of persistence, estimated by the long-memory parameter, is smaller when using online price indexes (believed to be a more realistic measure of inflation), mainly in the cases of Argentina, Brazil, China and the UK. Monetary policy implications are discussed.en© 2016 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Economics Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Economics Letters, vol. 148, pp. 55-58, 2016. doi : 10.1016/j.econlet.2016.09.003.Fractional integrationPersistenceOfficial inflation indexesOnline inflation indexesPostprint Article