Table 3.
Group means, standard deviations (in parentheses), and ranges for number of words and percent of vocabulary for each semantic category on the MacArthur-Bates Communicative Development Inventories: Words & Sentences.
| CDI Semantic Category | Autism Spectrum Group | Late Talker Group | ||
|---|---|---|---|---|
| # of Words | % Vocabulary | # of Words | % Vocabulary | |
| Mean (SD) Range |
Mean (SD) Range |
Mean (SD) Range |
Mean (SD) Range |
|
| Sound Effects (n=12) | 7.50 (2.89) 1–12 |
10.08 (7.66) 2–36 |
7.62 (2.87) 1–12 |
10.18 (6.43) 2–26 |
| Animals (n=43) | 11.25 (8.75) 1–30 |
9.95 (3.89) 3–18 |
9.45 (8.43) 0–30 |
8.34 (5.12) 0–18 |
| Vehicles (n=14) | 4.10 (3.72) 0–14 |
3.81 (2.99) 0–11 |
4.08 (3.41) 0–11 |
3.67 (2.72) 0–10 |
| Toys (n=18) | 4.33 (2.60) 1–10 |
4.59 (1.93) 2–10 |
4.35 (3.24) 0–12 |
4.05 (1.96) 0–9 |
| Food & Drink (n=68) | 12.40 (11.34) 0–37 |
9.98 (4.91) 0–21 |
13.08 (13.02) 0–50 |
11.39 (6.15) 0–25 |
| Clothing (n=28) | 3.92 (3.33) 0–12 |
3.55 (2.32) 0–12 |
4.85 (4.40) 0–15 |
4.34 (2.88) 0–13 |
| Body Parts (n=27) | 6.98 (6.07) 0–19 |
6.14 (3.44) 0–16 |
6.80 (5.68) 0–21 |
6.14 (3.17) 0–15 |
| Household Items (n=50) | 6.83 (7.05) 0–22 |
5.16 (4.30) 0–20 |
6.65 (7.50) 0–25 |
4.88 (3.96) 0–14 |
| Furniture & Rooms (n=33) | 3.45 (4.29) 0–13 |
2.35 (2.60) 0–12 |
2.75 (3.87) 0–16 |
1.91 (1.83) 0–6 |
| Outside Things (n=31) | 5.70 (5.78) 0–19 |
4.51 (2.97) 0–10 |
5.10 (5.11) 0–20 |
4.13 (2.98) 0–9 |
| Places to Go (n=22) | 2.00 (2.55) 0–11 |
1.32 (1.27) 0–4 |
2.28 (2.63) 0–10 |
1.86 (1.82) 0–8 |
| People (n=29) | 5.48 (3.09) 1–13 |
6.64 (3.96) 1–18 |
5.48 (2.47) 2–13 |
7.35 (5.03) 2–27 |
| Games & Routines (n=25) | 8.40 (4.02) 2–20 |
9.71 (4.19) 5–19 |
8.48 (3.46) 4–16 |
11.27 (6.71) 3–31 |
| Action Words (n=103) | 11.08 (10.85) 0–46 |
8.95 (4.72) 0–20 |
7.35 (9.42) 0–40 |
5.59 (4.42) 0–16 |
| Descriptive Words (n=63) | 6.98 (6.77) 0–22 |
5.42 (3.40) 0–13 |
6.18 (6.26) 0–27 |
5.78 (3.88) 0–20 |
| Time (n=12) | 0.40 (0.81) 0–4 |
0.29 (0.66) 0–3 |
0.40 (0.90) 0–4 |
0.33 (0.72) 0–4 |
| Pronouns (n=25) | 1.63 (1.61) 0–6 |
1.76 (1.99) 0–8 |
1.83 (1.57) 0–6 |
2.16 (2.03) 0–9 |
| Question Words (n=7) | 0.85 (1.05) 0–4 |
0.83 (1.25) 0–5 |
0.40 (0.71) 0–3 |
0.44 (0.88) 0–4 |
| Prepositions & Locations (n=26) | 2.67 (2.30) 0–8 |
2.58 (2.51) 0–10 |
2.38 (2.68) 0–13 |
2.53 (3.15) 0–19 |
| Quantifiers & Articles (n=17) | 1.38 (1.41) 0–7 |
1.47 (1.59) 0–6 |
0.83 (1.11) 0–5 |
0.93 (1.09) 0–4 |
| Helping Verbs (n=21) | 0.85 (0.98) 0–4 |
0.92 (1.28) 0–6 |
0.58 (1.11) 0–5 |
0.58 (1.11) 0–5 |
| Connecting Words (n=6) | 0.15 (0.53) 0–3 |
0.11 (0.44) 0–3 |
0.00 (0.00) 0–0 |
0.00 (0.00) 0–0 |