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. Happiness in Eastern Europe
2. Migration and Technological Change in Rural Households: Complements or Substitutes?
3. Valuing Farm Financial Information
4. Spatial agglomeration and business groups: new evidence from Italian industrial districts
5. The name is absent
6. Gerontocracy in Motion? – European Cross-Country Evidence on the Labor Market Consequences of Population Ageing
7. The name is absent
8. Design and investigation of scalable multicast recursive protocols for wired and wireless ad hoc networks
9. Quality practices, priorities and performance: an international study
10. Emissions Trading, Electricity Industry Restructuring and Investment in Pollution Abatement