Table 1.
Descriptive statistics for school readiness assessments.
| Task | N | M | SD | Min. | Max. | Skewness | Kurtosis | Reliability |
|---|---|---|---|---|---|---|---|---|
| Fall | ||||||||
| HTKS | 661 | 10.9 | 14.8 | 0 | 59 | 1.18 | 3.17 | 0.96 |
| DNS | 654 | 19.7 | 8.7 | 0 | 32 | −0.79 | 2.64 | 0.92 |
| DCCS | 120 | 10.4 | 5.4 | 2 | 21 | 0.82 | 2.29 | 0.92 |
| PPVT | 646 | 69.2 | 20.6 | 4 | 120 | −0.08 | 2.88 | 0.96 |
| WJLWI | 667 | 7.2 | 4.5 | 0 | 41 | 1.14 | 7.63 | -- |
| GRTR | 671 | 14.1 | 4.9 | 0 | 25 | −0.11 | 2.42 | 0.80 |
| BRLI | 669 | 8.2 | 5.0 | 0 | 15 | −0.10 | 1.54 | 0.93 |
| WJAP | 660 | 9.9 | 3.8 | 0 | 20 | −0.23 | 3.21 | -- |
| PENS | 667 | 9.2 | 4.9 | 0 | 22 | 0.31 | 2.54 | 0.90 |
| PALM | 669 | 10.2 | 3.3 | 0 | 16 | −0.59 | 3.06 | 0.78 |
| BRNC | 668 | 8.9 | 6.1 | 0 | 18 | −0.30 | 2.23 | 0.95 |
| NI | 120 | 3.9 | 2.7 | 0 | 9 | 0.21 | 2.06 | 0.86 |
| CARD | 121 | 2.1 | 1.8 | 0 | 6 | 0.54 | 2.21 | 0.78 |
| Spring | ||||||||
| HTKS | 596 | 18.1 | 18.3 | 0 | 60 | 0.56 | 1.94 | 0.97 |
| DNS | 610 | 22.4 | 7.5 | 0 | 32 | −1.44 | 4.36 | 0.91 |
| DCCS | 112 | 13.1 | 6.4 | 3 | 23 | 0.08 | 1.34 | 0.95 |
| PPVT | 597 | 78.9 | 21.5 | 14 | 144 | −0.05 | 2.77 | 0.96 |
| WJLWI | 611 | 9.9 | 5.5 | 0 | 47 | 1.90 | 11.63 | -- |
| GRTR | 611 | 16.8 | 4.8 | 0 | 25 | −0.56 | 3.02 | 0.83 |
| BRLI | 613 | 10.3 | 4.7 | 0 | 15 | −0.80 | 2.24 | 0.93 |
| WJAP | 612 | 11.6 | 3.5 | 0 | 21 | −0.11 | 3.50 | -- |
| PENS | 604 | 12.3 | 5.3 | 0 | 24 | 0.02 | 2.35 | 0.90 |
| PALM | 613 | 11.5 | 2.9 | 0 | 16 | −0.93 | 4.11 | 0.76 |
| BRNC | 614 | 11.9 | 5.5 | 0 | 18 | −0.84 | 3.32 | 0.94 |
| NI | 112 | 5.3 | 2.7 | 0 | 9 | −0.25 | 2.07 | 0.87 |
| CARD | 112 | 2.8 | 1.6 | 0 | 6 | −0.01 | 2.31 | 0.69 |
HTKS, Head-Toes-Knees Shoulders Task; DNS, Day/Night Stroop Task; DCCS, Dimensional Change Card Sort Task; PPVT, Peabody Picture Vocabulary Test-Revised; WJLWI, Woodcock-Johnson Letter Word Identification; GRTR, Get Ready to Read; BRLI, Bracken Letter Subtest; WJAP, Woodcock-Johnson Applied Problems; PENS, Preschool Early Numeracy Scale; PALM, Math Language Assessment; BRNC, Bracken Numeracy Subtest; NI, Numeral Identification; CARD, Cardinality.