Hosseinkouchack, Mehdi; Wolters, Maik H. - In: Economics Letters 121 (2013) 3, pp. 516-519
We apply a recent quantile autoregression unit root test to US GDP. The test takes into account that the transmission of a shock might depend on the sign and the size of the shock. We find that positive and negative shocks including large recessionary shocks like the 2008/2009 crisis have...