Testing for a unit root in the presence of a variance shift

被引:58
作者
Hamori, S [1 ]
Tokihisa, A [1 ]
机构
[1] Kobe Univ, Fac Econ, Nada Ku, Kobe, Hyogo 657, Japan
关键词
hypothesis testing; unit root test; structural break;
D O I
10.1016/S0165-1765(97)00245-0
中图分类号
F [经济];
学科分类号
02 ;
摘要
This paper examines the effects of shifts in variance on the unit root test. The limiting distribution of the test statistic is derived, and Monte Carlo experiment evidence on the finite sample is provided. This paper shows that the limiting distribution of the standard unit root test is not invariant to changes in variances. The results are supported by Monte Carlo experiments. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:245 / 253
页数:9
相关论文
共 14 条
[1]   HOW BIG IS THE RANDOM-WALK IN GNP [J].
COCHRANE, JH .
JOURNAL OF POLITICAL ECONOMY, 1988, 96 (05) :893-920
[2]  
DAVIDSON J, 1995, STOCHASTIC LIMIT THE
[3]   LIKELIHOOD RATIO STATISTICS FOR AUTOREGRESSIVE TIME-SERIES WITH A UNIT-ROOT [J].
DICKEY, DA ;
FULLER, WA .
ECONOMETRICA, 1981, 49 (04) :1057-1072
[4]   DISTRIBUTION OF THE ESTIMATORS FOR AUTOREGRESSIVE TIME-SERIES WITH A UNIT ROOT [J].
DICKEY, DA ;
FULLER, WA .
JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION, 1979, 74 (366) :427-431
[5]  
Greene, 2003, ECONOMETRIC ANAL, P1241
[6]   SEASONAL INTEGRATION AND COINTEGRATION [J].
HYLLEBERG, S ;
ENGLE, RF ;
GRANGER, CWJ ;
YOO, BS .
JOURNAL OF ECONOMETRICS, 1990, 44 (1-2) :215-238
[7]   UNIT-ROOT TESTS WITH CONDITIONAL HETEROSKEDASTICITY [J].
KIM, KW ;
SCHMIDT, P .
JOURNAL OF ECONOMETRICS, 1993, 59 (03) :287-300
[8]   TESTING THE NULL HYPOTHESIS OF STATIONARITY AGAINST THE ALTERNATIVE OF A UNIT-ROOT - HOW SURE ARE WE THAT ECONOMIC TIME-SERIES HAVE A UNIT-ROOT [J].
KWIATKOWSKI, D ;
PHILLIPS, PCB ;
SCHMIDT, P ;
SHIN, YC .
JOURNAL OF ECONOMETRICS, 1992, 54 (1-3) :159-178
[9]   DOES CORRECTING FOR HETEROSCEDASTICITY HELP [J].
MISHKIN, FS .
ECONOMICS LETTERS, 1990, 34 (04) :351-356
[10]   THE GREAT CRASH, THE OIL PRICE SHOCK, AND THE UNIT-ROOT HYPOTHESIS [J].
PERRON, P .
ECONOMETRICA, 1989, 57 (06) :1361-1401