RT Book, Section T1 Simple wald tests of the fractional integration parameter: an overview of new results A1 Dolado, Juan José A1 Gonzalo, Jesús A1 Mayoral, Laura AB This paper presents an overview of some new results regarding an easily implementable Wald test-statistic (EFDF test) of the null hypotheses that a time-series process is I(1) or I(0) against fractional I(d) alternatives, with d ∈ (0, 1), allowing for unknown deterministic components and serial correlation in the error term. Specifically, we argue that the EFDF test has better power properties under fixed alternatives than other available tests for fractional integration, as well as analyze how to implement this test when the determinitic components or the long-memory parameter are subject to structural breaks. PB Oxford University Press YR 2009 FD 2009 LK https://hdl.handle.net/10016/3228 UL https://hdl.handle.net/10016/3228 LA eng NO Forthcoming 2008 DS e-Archivo RD 30 abr. 2024