Table 2 Inter-correlation ^* between the nine items ^**

1. I think I spend way too much time playing computer games

1.00

0.37

0.63

0.30

0.09

0.23

0.40

0.24

0.30

2. I get in bad mood when I cannot spend time on computer games

1.00

0.47

0.16

0.40

0.25

0.26

0.49

0.31

3. My parents tell me, I spend way too much time on computer gaming

1.00

0.19

0.12

0.41

0.30

0.28

0.42

4. I think I spend way too much time on internet communication and surfing

1.00

0.46

0.57

0.19

0.15

0.15

5. I get in bad mood when I cannot spend time on internet communication and surfing

1.00

0.52

0.09

0.32

0.17

6. My parents say, that I spend way too much time on internet communication and surfing

1.00

0.16

0.24

0.29

7. I think I spend way too much time on console-gaming

1.00

0.57

0.68

8. I get in bad mood when I cannot spend time on console-gaming

1.00

0.63

9. My parents tell me, I spend way too much time on console-gaming

1.00