Table 2.
Correlations between age, education, and all neuropsychological measures in our control group. Pearson's correlations for composite memory, executive function, and psychomotor speed. Spearman rank order correlations for all other measures.
| Age | Educ. | Tmta | Tmtb | Vfsem | Vfphon | Reactime | Compatt | Cognflex | Procsp | Compm | Psysp | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Educ. | −0.11 | |||||||||||
| Tmta | −0.07 | −0.14 | ||||||||||
| Tmtb | 0.00 | −0.10 | 0.72*** | |||||||||
| Vfsem | −0.09 | 0.12 | −0.44* | −0.59*** | ||||||||
| Vfphon | 0.03 | 0.05 | −0.24 | −0.42** | 0.69*** | |||||||
| Reactime | 0.14 | −0.23 | 0.16 | 0.01 | 0.13 | −0.03 | ||||||
| Compatt | 0.04 | −0.04 | −0.02 | 0.30 | −0.31 | −0.30 | −0.42* | |||||
| Cognflex | −0.03 | 0.18 | −0.47** | −0.65*** | 0.62*** | 0.49*** | −0.01 | −0.58*** | ||||
| Procsp | 0.10 | −0.21 | −0.06 | −0.11 | −0.05 | −0.37* | 0.21 | 0.03 | −0.09 | |||
| Compm | 0.12 | −0.02 | −0.10 | −0.33 | 0.08 | 0.30 | −0.22 | −0.25 | 0.40* | 0.10 | ||
| Psysp | −0.11 | 0.02 | −0.44* | −0.51** | 0.32 | 0.12 | −0.30 | 0.14 | 0.31 | 0.09 | 0.41* | |
| Exfunct | 0.23 | −0.03 | −0.15 | −0.09 | −0.06 | −0.23 | 0.12 | 0.00 | −0.12 | 0.69*** | 0.05 | −0.04 |
Correlation is significant at P < 0.001***, P < 0.01**, P < 0.05*.
Age; Educ.: education; tmta: trail making test a; tmtb: trail making test b; vfsem: verbal fluency semantic; vfphon: verbal fluency phonological; reactime: reaction time; compatt: complex attention; cognflex: cognitive flexibility; procsp: processing speed; compm: composite memory; psysp: psychomotor speed; exfunct: executive function.