Table 3 Validity of 30 performance measures extracted from the five tablet tasks
Variable | Correlation with age (rs, N = 88) | Correlation with BBT (rs, N = 54) | Correlation with Moberg test (rs, N = 54) |
|---|---|---|---|
Finger recognition | |||
 1. RT mirror | 0.37* | − 0.18 | 0.37 |
 2. RT inverted | 0.40* | − 0.40 | 0.25 |
 3. RT rotated | 0.41* | − 0.11 | 0.06 |
 4. Average RT | 0.43* | − 0.32 | 0.22 |
 5. RT cond. (inverted-mirror) | 0.17 | − 0.35 | 0.06 |
 6. RT cond. (rotated-mirror) | 0.23 | − 0.03 | − 0.10 |
 7. SD of average RT | 0.51* | − 0.11 | 0.24 |
 8. Average Correct trial | − 0.33 | 0.03 | − 0.05 |
Rhythm tapping | |||
 9. ITI 1 Hz. cued | 0.10 | − 0.01 | − 0.03 |
 10. ITI 2 Hz. cued | 0.27 | − 0.28 | 0.25 |
 11. ITI 3 Hz. cued | 0.24 | − 0.34 | 0.26 |
 12. ITI 1 Hz. no_cue | 0.01 | 0.14 | − 0.07 |
 13. ITI 2 Hz. no_cue | 0.25 | − 0.12 | 0.10 |
 14. ITI 3 Hz. no_cue | 0.12 | − 0.11 | 0.09 |
Multi-finger tapping | |||
 15. RT single-finger | 0.23 | − 0.27 | 0.27 |
 16. RT two-finger | − 0.10 | − 0.32 | 0.07 |
 17. RT (two-single finger) | − 0.26 | − 0.08 | − 0.05 |
 18. Unwanted movements single-finger | 0.28 | − 0.11 | − 0.12 |
 19. Unwanted movements two-finger | − 0.13 | 0.24 | − 0.04 |
 20. Correct trial two-finger | -0.394* | 0.24 | − 0.04 |
Sequence tapping | |||
 21. STT. acquisition | -0.24 | 0.01 | 0.24 |
 22. STT. (acquisition-memory) | 0.08 | 0.04 | -0.33 |
Line tracking | |||
 23. Duration single-task | 0.55* | − 0.14 | 0.1 |
 24. Duration dual-task | 0.51* | 0.09 | 0.03 |
 25. Average Duration | 0.55* | 0.02 | 0.10 |
 26. Duration cond. (dual-single task) | − 0.15 | 0.13 | − 0.21 |
 27. Average Error | − 0.05 | 0.13 | − 0.11 |
 28. Error/duration single-task | − 0.46* | 0.02 | − 0.12 |
 29. Error/duration dual-task | − 0.38* | − 0.06 | − 0.01 |
 30. Average Error/duration | − 0.53* | 0.11 | − 0.18 |