Appendix D: Additional Information About the Sample Study
|
Group |
n |
Mean |
S.D. |
|
Age at pretest |
|||
|
2 yrs, 10 mos - 3 yrs, 11 mos |
279 |
86.8 |
14.3 |
|
4 yrs, 0 mos - 4 yrs, 11 mos |
402 |
83.1 |
15.7 |
|
5 yrs, 0 mos - 5 yrs, 11 mos |
102 |
83.0 |
16.7 |
|
Over 5 yrs, 11 mos |
10 |
83.0 |
24.5 |
|
Gender |
|||
|
Male |
481 |
84.0 |
16.2 |
|
Female |
482 |
85.5 |
15.0 |
|
Race/Ethnicity |
|||
|
African American |
258 |
83.4 |
15.1 |
|
Asian |
55 |
79.2 |
17.3 |
|
Hispanic |
297 |
85.8 |
14.0 |
|
American Indian |
26 |
81.8 |
21.1 |
|
Caucasian |
252 |
86.7 |
16.3 |
|
Highest grade attained by target parent |
|||
|
Grade 0-4 |
39 |
84.8 |
11.8 |
|
Grade 5-8 |
157 |
84.6 |
15.7 |
|
Grade 9-12 |
509 |
84.9 |
15.6 |
|
Diploma or GED |
110 |
86.4 |
16.3 |
|
Some college or college degree |
83 |
82.4 |
17.7 |
|
Language of test administration |
|||
|
English |
725 |
84.3 |
15.9 |
|
Spanish |
219 |
86.5 |
13.9 |
|
Total |
1016 |
84.7 |
15.6 |
|
Exhibit reads: PLS-3 total language pretest data were collected on 279 children ranging in age from 2 years, 10 months to 3 years, 11 months. The mean PLS total language score for these children was 86.8 points, with a standard deviation of 14.3 points. |

| Exhibit reads: For children between the ages of 3 years, 6 months and 3 years, 11 months who were pretested and posttested once on the auditory portion of the Preschool Language Scales, the average pretest score was 31 (raw score), which corresponds to an age equivalent score of 3 years, 1 month, or 5 months, on average, below scores based on chronological age. For those children between 3 years, 6 months and 3 years, 11 months, the average posttest (raw score) was 34, which corresponds to an age equivalent score of 3 years, 5 months, or 1 month, on average, below scores based on chronological age. |

| Exhibit reads: For children between the ages of 3 years, 6 months and 3 years, 11 months who were pretested and posttested twice on the auditory portion of the Preschool Language Scales, the average pretest score was 32 (raw score), which corresponds to an age equivalent score of 3 years, 3 month, or 3 months, on average, below scores based on chronological age. For those children between 3 years, 6 months and 3 years, 11 months who were posttested a second time, the average raw score was 34, which corresponds to an age equivalent score of 3 years, 5 months, or 1 month, on average, below scores based on chronological age. |
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[ Exhibit D-1 ] | [ Exhibits D-3 and D-4] |