Table 2.
Spearman correlations of five most important semantic verbal fluency (sVF) features with significantly predictable cognitive flexibility targets.
| SPM—correct items | TMT—difference part B-A | WCST—non-perseveration errors | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Top 5 sVF features | r | p | Top 5 sVF features | r | p | Top 5 sVF features | r | p | |||
| 1 | Repetition error t1 | − 0.05 | 0.44 | 1 | Latencies 4th quarter t1 | − 0.01 | 0.88 | 1 | Repetition error t3 | − 0.10 | 0.12 |
| 2 | Latencies 2nd quarter t1 | − 0.09 | 0.18 | 2 | Repetition error t3 | − 0.12 | 0.08 | 2 | Latencies 1st quarter t1 | 0.17 | 0.01* |
| 3 | Category error t3 | − 0.01 | 0.87 | 3 | Latency difference t1 | − 0.02 | 0.80 | 3 | Category error t3 | 0.01 | 0.85 |
| 4 | Correct words t1 | − 0.12 | 0.08 | 4 | Category error t3 | − 0.07 | 0.27 | 4 | Correct words t2 | − 0.16 | 0.02* |
| 5 | Cum. mean t3 | 0.14 | 0.05* | 5 | Repetition error t1 | − 0.01 | 0.80 | 5 | Total sum score t1 + t2 + t3 | − 0.16 | 0.02* |
1–5 = Top five sVF features with regards to predictor performance based on feature importance; correlations with p < 0.1 are marked in bold; significant correlations (p < 0.05) are marked with *.
SPM Raven’s Standard Progressive Matrices; TMT Trail-Making Test; WCST Wisconsin Card Sorting Test.
t1 = VF test (animals); t2 = VF test (jobs); t3 = Switching VF test (sports/fruits); Cum cumulative.