Table 5 Correlation coefficients between training performance (differentiation in transfer trials), improvement on behavioural scales, and parental support of the neurofeedback group

Difference scores

Total group (N = 17)

Good performers (N = 8)

Poor performers (N = 9)

Total group (N = 17)

Parents' ratings

DSM IV (FBB- HKS)

Hyperactivity

.11

.81 *

-.32

.34

Inattention

.10

.21

.45

.52 *

Impulsivity

.03

.75 *

-.35

-.02

BRIEF

Behavioral Index

.23

.64

.32

.42

Metacognitive Index

.18

.31

.06

.35

CPRS

Global Score

.17

.64

.12

.45

Teachers' ratings

CTRS

Global Score

-.16

.17

-.29

.54 *

BRIEF

Behavioral Index

.07

.0

-.37

.25

Metacognitive Index

.18

.27

-.22

.43

Neuropsychological tests

Alertness TAP sd

-.51 *

-.62

-.15

-.27

Go/nogo TAP errors

.17

.29

-.72 *

-.12

Score correct

-.33

.56

-.39

.21

Code transmission correct

-.13

.32

.13

-.05

D2 concentration

-.11

.14

.27

-.30

TMT (time B-A)

-.04

-.14

-.48

.32