Table 6. Neuropsychology Data and Between-Groups Comparisons: ANCOVAs (controlling for age differences) of the 2-group (HC v MJ) comparisons (1-tailed).
| Variable | HC | MJ | 2-group ANCOVA | |
|---|---|---|---|---|
| F | p (η2) | |||
| n | 20 | 23 | ||
| WCST | ||||
| Total Categories | 9.30 (0.98) | 8.73 (1.55) | 6.746 | .007 (.147) |
| Total Perseverations | 6.40 (4.44) | 10.50 (8.55) | 12.680 | .001 (.245) |
| Total Losses of Set | 0.15 (0.37) | 0.36 (0.73) | 2.502 | .061 (.060) |
| Stroop Color Word Test | ||||
| Color Naming Time (sec) | 49.60 (7.47) | 52.26 (8.43) | 1.449 | .118 (.035) |
| Color Naming Errors | 0.55 (1.00) | 1.09 (1.12) | 2.281 | .070 (.054) |
| Word Reading Time (sec) | 38.95 (4.39) | 39.65 (4.51) | 0.256 | .308 (.006) |
| Word Reading Errors | 0.35 (0.59) | 0.43 (0.59) | 0.248 | .311 (.006) |
| Interference Time (sec) | 85.75 (15.60) | 86.96 (14.50) | 0.273 | .302 (.007) |
| Interference Errors | 2.10 (1.94) | 2.65 (2.25) | 0.802 | .188 (.020) |
| Trail Making Test | ||||
| A Time (sec) | 20.85 (6.29) | 20.95 (4.53) | 0.122 | .365 (.003) |
| A Errors | 0.10 (0.31) | 0.18 (0.39) | 0.231 | .317 (.006) |
| B Time (sec) | 38.85 (11.21) | 50.50 (22.65) | 4.784 | .018 (.109) |
| B Errors | 0.15 (0.49) | 0.32 (0.48) | 0.863 | .180 (.022) |
| COWAT | ||||
| Total (FAS) | 47.65 (8.78) | 48.45 (11.43) | 0.035 | .426 (.001) |
| Semantic Category | 26.45 (6.42) | 21.86 (5.59) | 7.134 | .006 (.155) |
| Digit Span | ||||
| Forward | 9.80 (2.09) | 9.78 (2.39) | 0.010 | .462 (<.001) |
| Backward | 8.85 (2.50) | 8.70 (2.24) | 0.113 | .370 (.003) |
| Total | 18.65 (4.06) | 18.48 (3.82) | 0.021 | .443 (.001) |
| ROCF | ||||
| Copy | 33.00 (2.92) | 32.72 (3.33) | 0.206 | .327 (.005) |
| Immediate | 22.69 (7.55) | 22.42 (7.01) | 0.078 | .391 (.002) |
| Delayed | 22.81 (6.82) | 22.07 (6.65) | 0.239 | .314 (.006) |
| CVLT | ||||
| Trial 1 Correct | 8.25 (1.89) | 7.39 (2.41) | 2.381 | .065 (.056) |
| Total Correct | 61.10 (8.14) | 57.52 (8.95) | 2.717 | .054 (.064) |
| Total Perseverations | 4.75 (5.44) | 5.57 (5.47) | 0.155 | .348 (.004) |
| Total Intrusions | 1.60 (2.14) | 0.57 (0.90) | 3.637 | .032 (.083) |
| Total Semantic Clusters | 27.10 (11.09) | 21.61 (8.52) | 4.347 | .022 (.098) |
| Long Delay Correct | 13.90 (1.68) | 13.09 (3.13) | 2.596 | .058 (.061) |
| HVOT | 26.56 (1.76) | 26.80 (2.18) | 0.133 | .359 (.004) |
WCST = Wisconsin Card Sorting Test, ROCF = Rey Osterrieth Complex Figure, COWAT = Controlled Oral Word Association Test, CVLT = California Verbal Learning Test, HVOT = Hooper Visual Organization Test