Table 2.

Group performance on sentence repetition, working memory, and processing speed tasks.

Measure	DLI		TL		d a
	M (SD)	Minimum–maximum	M (SD)	Minimum–maximum
Sentence repetition by condition
Short argument sentences	82.2 (21.2)	52.2–96.3	94.9 (11.6)	78.8–100.0	0.74*
Short adjunct sentences	69.9 (24.8)	41.3–87.4	87.7 (19.3)	69.4–99.3	0.81*
Long argument sentences	38.1 (20.3)	24.5–66.7	58.7 (26.1)	33.4–98.6	0.88*
Long adjunct sentences	40.0 (22.7)	20.8–78.7	63.3 (24.9)	34.2–97.9	0.98*
Working memory measures
CLPT recall percentage	69.9 (11)	40–88	86.4 (10)	69–100	1.6*
Running Span digits	3.2 (.62)	2.1–4.6	4.2 (.73)	3.2–6.3	1.5*
Processing speed measures
Truth Value RT (ms)	2,358 (292)	2,019–3,147	2,199 (304)	1,662–2,917	0.5
Word Detection RT (ms)	431 (126)	275–785	341 (60)	257–488	0.9*

Note. Sentence repetition scores are percentage of words correctly repeated. DLI, developmental language impairment; TL, typical language; CLPT, Competing Language Processing Task (Gaulin & Campbell, 1994); Running Span digits, the maximum number of digits recalled for any block; Truth Value RT, response time for indicating whether a sentence and picture matched; Word Detection RT, response time for indicating that a target word appeared in a sentence.

^a Effect size of the group mean difference.

^*Test of group mean differences p < .05.