From: Verbal short-term memory deficits in Down syndrome: phonological, semantic, or both?
 | DS | Control | Significance |
---|---|---|---|
N | 18 | 18 | Â |
Age | 19.18 (3.34) | 5.85 (2.05) | t(17) = 16.36, p < .001 |
Male (%) | 27.8 | 27.8 | χ2 (1) = 0, p = 1 |
Caucasian (%) | 77.8 | 88.9 | χ2 (1) < 1.0, p > .37 |
Mother Years of Educationa | 15.59 (3.15) | 16.19 (2.04) | t(15) = −0.79, p > .43 |
Father Years of Educationa | 15.81 (2.40) | 16.75 (1.48) | t(15) = −1.83 p > .08 |
PPVT-IIIb Raw Score | 89.78 (27.42) | 91.00 (27.40) | t(17) = −1.48, p > .15 |
PPVT-IIIb Age Equivalent | 6.95 (2.32) | 7.03 (2.48) | t(17) = −.85, p > .40 |
DAS PCc Ability Score | 105.24 (18.83) | 114.71 (19.84) | t(16) = −1.5, p > .14 |
DAS PCc Age Equivalent | 6.27 (2.28) | 7.55 (2.63) | t(16) = −1.63, p > .12 |
DAS RDd Raw Score | 10.39 (3.88) | 17.28 (5.14) | t(17) = −5.87, p < .001 |
DAS RDd Age Equivalent | 3.95 (1.17) | 7.48 (3.83) | t(17) = −4.14, p < .01 |