Variable type | Variable description | ρ | F1 | F2 | F3 | F4 |
---|---|---|---|---|---|---|
Lexical | Average word length | − 0.74 | 0.78 | |||
Acoustic | Speech rate | − 0.68 | ||||
Acoustic | Average word duration | 0.68 | 0.62 | |||
Acoustic | Number of unfilled pauses | 0.63 | − 0.68 | |||
Acoustic | Number of long pauses | 0.48 | − 0.87 | |||
Lexical | Use of past tense verbs | 0.47 | ||||
Acoustic | Variance of the number of zero crossings | − 0.46 | − 0.81 | |||
Acoustic | Skewness of the number of zero crossings | 0.46 | 0.91 | |||
Acoustic | Mean number of zero crossings | − 0.46 | − 0.79 | |||
Acoustic | Kurtosis of the number of zero crossings | 0.46 | 0.91 | |||
Acoustic | Total duration of short pauses | − 0.46 | 0.63 | |||
Lexical | Ratio of subordinate to coordinate words | 0.46 | ||||
Lexical | Average word frequency | 0.43 | − 0.79 | |||
Acoustic | Total duration of long pauses | 0.43 | − 0.87 | |||
Syntactic | Use of noun phrases with determiners and nouns | 0.42 | 0.67 | |||
Acoustic | Number of short pauses | − 0.42 | 0.72 | |||
Syntactic | Use of conjunctive verb phrases | − 0.41 | ||||
Acoustic | Mean pause duration | 0.39 | − 0.66 | |||
Lexical | Use of demonstrative words | 0.39 | ||||
Syntactic | Use of singular present verb phrases with prepositional phrases | − 0.39 | ||||
Syntactic | Number of coordinate phrases per clause | − 0.39 | 0.72 | |||
Lexical | Number of words | 0.39 | − 0.64 | |||
Syntactic | Use of coordinate phrases | − 0.38 | ||||
Acoustic | Skewness of the second derivative of the 4th MFCC | − 0.38 | − 0.85 | |||
Lexical | Average dominance score of all words | − 0.37 | ||||
Acoustic | Kurtosis of the second derivative of the 4th MFCC | 0.37 | 0.94 | |||
Lexical | Use of comparative adjectives | 0.37 | ||||
Syntactic | Use of past tense verb phrases with noun phrases | 0.37 | 0.73 | |||
Acoustic | Mean of the first derivative of the 10th MFCC | − 0.37 | ||||
Lexical | Average dominance scores of nouns | − 0.36 | ||||
Syntactic | Use of adjective phrases | − 0.36 |