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. Author manuscript; available in PMC: 2015 Nov 10.
Published in final edited form as: J Educ Psychol. 2012 Aug;104(3):515–528. doi: 10.1037/a0027182

Table 2.

Summary of Intercorrelations, Means, and Standard Deviations for Predictor Variables, Text Types, and Question Types

Variable 1 2 3 4 5 6 M SD
1. Age -- 11.82 1.32
2. TOWRE −.14 -- 98.86 11.79
3. PPVT −.11 .52*** -- 111.46 14.22
4. TOLD −.28** .36*** .60*** -- 10.73 3.15
5. TLC −.02 .21* .41*** .34*** -- 8.99 2.57
6. D-KEFS −.16* .04 .26** .07 .22** -- 10.35 2.17
Nar −.15 .46*** .59*** .46*** .37*** .19* .73 .22
Exp −.15 .54*** .53*** .44*** .40*** .33*** .75 .20
Fun .07 .43*** .55*** .33*** .33*** .23** .79 .20
IU −.13 .50*** .55*** .43*** .33*** .22** .80 .19
IN −.07 .50*** .63*** .45*** .41*** .25** .79 .19
CAPS −.04 .45*** .52*** .33*** .38*** .28** .67 .23

Note: n = 118, because 8 participants were missing scores for at least one of the predictor measures. TOWRE: Test of Word Reading Efficiency, Sight Word Efficiency, Standard Score; PPVT: Peabody Picture Vocabulary Test – 3rd Edition – Standard Score; TOLD: Test of Language Development – Grammatic Comprehension – Scaled Score; TLC: Test of Language Competence – Listening Comprehension: Making Inferences – Scaled Score; D-KEFS: Delis-Kaplan Executive Function – Tower Test, Total Achievement – Scaled Score; Nar = Narrative, Exp = Expository, Fun = Functional Text, IU = Initial Understanding Questions, IN = Interpretation Questions, CAPS= Critical Analysis/Process Strategies Questions.

*

p < .05,

**

p < .01,

***

p < .001