r

n

Full sample

0.274

115

Subsample of valid CRT responses

0.348

90

Subsample for those who scored 0 and 1

0.337

56

Subsample for those who scored 2 and 3

0.395

34

$H_0:{\text{CRT}}_{0,1}-{\text{CRT}}_{2,3}\ne 0$

$z=-0.298$

$p\text{-value}=0.382$