Table 2.

Sample-wise Characteristics for Each Speech Feature.

Speech Index	Intact	MCI	t (df = 86)	p	Cohen’s d
Total words	491.55 ± 233.54	348.23 ± 241.29	2.60	.01	0.60
Filler words	0.64 ± 0.61	0.73 ± 0.80	0.55	.58	0.13
Empty words	0.25 ± 0.16	0.18 ± 0.12	1.91	.06	0.49
Definite articles	1.63 ± 0.55	1.26 ± 0.64	2.78	.007	0.62
Indefinite articles	0.51 ± 0.17	0.47 ± 0.19	0.90	.37	0.22
Pronouns	2.54 ± 0.72	2.12 ± 0.77	2.47	.02	0.56
Nouns	4.43 ±1.11	3.51 ± 1.12	3.55	.001	0.83
Verbs	4.43 ± 1.14	3.81 ± 1.28	2.22	.03	0.51
Determiners	2.51 ± 0.73	1.98 ± 0.80	3.04	.003	0.69
Content Words	9.81 ± 2.49	8.06 ± 2.89	2.87	.005	0.64
Lexical Frequency	5.42 ± 0.33	5.62 ± 0.52	2.23	.03	0.46
Type-Token ratio	0.40 ± 0.07	0.44 ± 0.09	2.52	.01	0.50
Honoré’s statistic	−6.10 ± 1.44	−7.86 ± 3.30	3.50	.001	0.69
Brunet’s index	13.40 ± 0.98	12.70 ± 1.36	2.74	.008	0.59
Speech rate	2.41 ± 0.34	2.31 ± 0.43	1.11	.27	0.26
Filler rate	0.07 ± 0.06	0.09 ± 0.08	1.23	.22	0.28

Note. Values show mean and standard deviation of each linguistic feature for each participant group, as well as the t-statistic, p-value, and Cohen’s d for the comparison between the two groups.