A Consistent Nonparametric Test for Causality in Quantile



Using (A.10) and (A.11-4), we have the following inequality;

Pr[Thml( J - JT)| > δ I supQ,(x)-Qθ(x)C}

Pr{ max { Thm2(J -J„,)| , TW'Jt - Jtl)| } > δ I supQβ(x)-Q(x)CT}

, for all δ > 0 .                                                             (A.12)

Invoking Lemma 1 and condition A2(iii), we have

Pr{ sup Qθ(x)-Qθ(x)Ct} 1 as T → ∞ .                   (A.13)

By (A.8) and (A.9), as T → ∞, we have

Pr{ max { Thm/2(Jt - Jtu) , Thm/2(Jt - Jtl) } > δ } 0, for all δ > 0.

(A.14)

Therefore, as T → ∞,

the L.H.S. of the inequality (A.12) - Pr { Thm/2(Jt - Jt )δ } 0 and

the L.H.S. of the inequality (A.12) 0 .

In summary, we have that if both Thm/2(JT-JTU) =op(1) and Thm/2(JT-JTU) =op(1),
then
Thm/2(^Jt - Jt ) = op (1).                                                         

Step 3: Asymptotic equivalence.

In the remaining proof, we focus on showing that Thm/2(JT-JTU) =op(1), with the proof
of
Thm/2(JT-JTL) =op(1) being treated similarly. The proof of Step 3 is close in lines
with the proof in Zheng (1998). Denote

HT(s,t,g)Kts{1(ytg(xt))-,}{1(ysg(xs))-,} and             (A.15)

J[g]


1

T (T -1) hm


T

t=1


T
HT(s,t,g).
st


(A.16)


Then we have JTJ[Q,] and JTUJ[Q, -CT]. We decompose HT (s,t, g) into
three parts;

HT(s,t,g)=Kts{1(ytg(xt))-F(g(xt)zt)}{1(ysg(xs))-F(g(xs)zs)}

13



More intriguing information

1. Regional dynamics in mountain areas and the need for integrated policies
2. Evolution of cognitive function via redeployment of brain areas
3. Inflation Targeting and Nonlinear Policy Rules: The Case of Asymmetric Preferences (new title: The Fed's monetary policy rule and U.S. inflation: The case of asymmetric preferences)
4. The name is absent
5. Spectral density bandwith choice and prewightening in the estimation of heteroskadasticity and autocorrelation consistent covariance matrices in panel data models
6. Ex post analysis of the regional impacts of major infrastructure: the Channel Tunnel 10 years on.
7. The name is absent
8. Revisiting The Bell Curve Debate Regarding the Effects of Cognitive Ability on Wages
9. The name is absent
10. Knowledge and Learning in Complex Urban Renewal Projects; Towards a Process Design