Table 11 Correlation of features with statistically significant accuracies in age-, education-, and gender-controlled experiments
ID | Features | 2.3 | 2.8 | 5.3 | 5.4 | 5.6 | 5.7 | 5.8 | 5.9 | 7.1 | 7.2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
2.3 | Pronoun freq. | — | |||||||||
2.8 | Pronoun-to-noun ratio | 0.94 | — | ||||||||
5.3 | Silence ratio | 0.12 | 0.21 | — | |||||||
5.4 | Silence to utt. ratio | 0.24 | 0.29 | 0.60 | — | ||||||
5.6 | Avg. silence count | −0.30 | −0.36 | −0.55 | −0.38 | — | |||||
5.7 | Silence rate | 0.17 | 0.22 | 0.54 | 0.39 | −0.68 | — | ||||
5.8 | Cont. speech rate | 0.33 | 0.34 | 0.38 | 0.31 | −0.87 | 0.45 | — | |||
5.9 | Avg. cont. word count | 0.04 | −0.01 | −0.67 | −0.45 | 0.41 | −0.40 | −0.27 | — | ||
7.1 | Phoneme rate | −0.01 | −0.14 | −0.70 | −0.44 | 0.52 | −0.61 | −0.23 | 0.49 | — | |
7.2 | Word rate | −0.00 | −0.06 | −0.59 | −0.38 | 0.47 | −0.56 | −0.19 | 0.42 | 0.90 | — |