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Table 2 Association between difference scores on the go/no-go task and parent and teacher ratings on the Conners' scales (T-scores): correlations (r) and partial correlations, controlling for age (partial r), with associated effect sizes (d)

From: Testing assumptions for endophenotype studies in ADHD: Reliability and validity of tasks in a general population sample

Difference score

Teacher (n = 38–39): total ADHD symptom score

Parent (n = 45–46): total ADHD symptom score

 

r

d

partial r

d

r

d

partial r

d

slow – fast condition

   mean RT

.19

0.4

.24

0.5

-.11

-0.2

-.06

-0.1

   SD of RTs

.44**

1.0

.44**

1.0

.08

0.2

.13

0.3

   commission errors

.39*

0.8

.40*

0.9

.11

0.2

.12

0.2

slow – incentive condition

   mean RT

.36*

0.8

.38*

0.8

.15

0.3

.19

0.4

   SD of RTs

.44**

1.0

.46**

1.0

.13

0.3

.17

0.3

   commission errors

.21

0.4

.20

0.4

-.03

-0.1

-.06

-.01

  1. * p < .05 (2-tailed); ** p < .01 (2-tailed)