Table 2.
Descriptive statistics of the dependent measures and group differences.
| FMR1 Premutation | Controls | |||||
|---|---|---|---|---|---|---|
|
| ||||||
| Mean (SD) | Mean (SD) | df | t/Z | Effect Size | p | |
| Memory | ||||||
| PAL total errors | 24.52 (23.75) | 18.84 (17.32) | 71 | −1.06 | .25 | .295 |
| SWM between errors | 44.81 (23.35) | 36.12 (19.56) | 71 | −1.59 | .38 | .116 |
| Response Inhibition | ||||||
| SST reaction time | 225.8 (56.44) | 216.4 (57.29) | 71 | −0.68 | .16 | .501 |
| Motor Control and Speed | ||||||
| CRT movement time | 270.9 (83.43) | 229.1 (43.95) | 71 | −2.34 | .56 | .022 |
| CRT reaction time | 335.5 (42.59) | 306.1 (32.32) | 71 | −3.02 | .72 | .003 |
| Purdue Pegboard (R+L+Both) | 35.77 (4.90) | 39.60 (5.11) | 70 | 3.12 | .77 | .003 |
| BDS-2 | 19.60 (2.52) | 19.84 (2.14) | 71 | 0.40 | .10 | .691 |
| Planning and Problem Solving | ||||||
| OTS problems solved | 10.21 (2.32) | 10.68 (1.97) | 71 | 0.86 | .20 | .390 |
| Sustained Visual Attention | ||||||
| RVP A′ signal detection | .926 (0.05) | .941 (0.04) | 71 | 1.20 | .28 | .235 |
| Neurological Examination | ||||||
| UPDRS | 0.69 (0.95) | 0.56 (0.87) | 71 | 0.56 | .07 | .558 |
| ICARS | 3.38 (1.69) | 2.46 (1.06) | 69 | 2.31 | .27 | .021 |
Abbreviations: PAL, Paired Associates Learning; SWM, Spatial Working Memory; SST, Stop Signal Task; CRT, Choice Reaction Time; OTS, One-Touch Stockings; RVP, Rapid Visual Processing; BDS-2, Behavioral Dyscontrol Scale, Second Edition; UPDRS, Unified Parkinson’s Disease Rating Scale; ICARS, International Cooperative Ataxia Rating Scale.