The asymptotic behaviour of the Dickey-Fuller tests under the crash hypothesis

被引:13
|
作者
Montañés, A [1 ]
Reyes, M [1 ]
机构
[1] Univ Zaragoza, Dept Econ Anal, Zaragoza 50005, Spain
关键词
unit root; crash hypothesis; Wiener processes;
D O I
10.1016/S0167-7152(98)00201-6
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
This paper considers the behaviour of the Dickey-Fuller tests when the variable being studied is generated according to Perron's (1989) crash hypothesis. We show that these statistics tend towards the Dickey-Fuller distributions under the null hypothesis and diverge towards -infinity under the alternative. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码:81 / 89
页数:9
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