Shi, ShuPingVipin, Arora2015-12-070165-1765http://hdl.handle.net/1885/17305We estimate three different models of speculative behaviour using oil price data. Our findings provide support for the claim by . Phillips and Yu (2011) and . Gilbert (2010) that a bubble in oil prices existed for a short period in 2008.Keywords: Bubble; Estimation; Oil price; Speculative behaviour; Three-regime201210.1016/j.econlet.2011.12.1262016-02-24