Table 4.
Correlation matrix for the lexical and acoustic measures.
| Variable | Total speech time | Total number of words | Lexical diversity | Familiarity (noun) | Number of filler words | Pause rate | Speech rate | Frequency (noun) |
|---|---|---|---|---|---|---|---|---|
| Total speech time | ||||||||
| Total number of words | .92*** | |||||||
| Lexical diversity | .01 | .03 | ||||||
| Familiarity (noun) | .37*** | .38*** | .06 | |||||
| Number of filler words | .12 | .08 | .13 | .01 | ||||
| Pause rate | −.21* | −.25** | .02 | −.12 | .32*** | |||
| Speech rate | −.15 | .22* | .05 | .00 | −.15 | −.08 | ||
| Frequency (noun) | −.05 | .09 | −.03 | .11 | .01 | .01 | .33*** | |
| MLC | −.16 | −.18 | .06 | −.07 | .06 | .11 | −.09 | −.27** |
Note. MLC = mean length of clause.
*
p < .05.
**
p < .01.
***
p < .001.