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. Author manuscript; available in PMC: 2016 Apr 8.
Published in final edited form as: Sci Stud Read. 2015;19(2):114–134. doi: 10.1080/10888438.2014.943905

Table A1.

Correlations and Descriptive Statistics for assessments used in the structural equation models for students (n = 52) in this study, which were not significantly different for the students (n = 396) in the larger study

LW PC GMC GMRV AK PV SR
Passage Comprehension (PC) .54***
Gates MacGinitie Comprehension (GMC) .509*** .722***
Gates MacGinitie Reading Vocabulary (GMRV) .797*** .583*** .649***
Academic Knowledge (AK) .656*** .519*** .464** .747***
Picture Vocabulary (PV) .606*** .561*** .460** .658*** .780***
Story Recall (SR) .347* .496*** .307* .392*** .553*** .619***
Mean SS/PR (SD) 100.26 (10.03) 95.53 (10.09) 34.26 (28.19) 45.62 (23.54) 90.19 (9.45) 97.12 (9.45) 97.21 (13.64)

Note: Gate MacGinitie means provided as percentile rank (PR); all other means are standard scores (SS). Correlations were computed using equal interval IRT scale scores (i.e., W or ESS scores).