At last! A comprehensive standardized measure of orthographic skills!
Ages: 6-0 through 17-11Testing Time: 30-45 minutesAdministration: Individual or Group
CompositesThe results of the subtests on each version can be combined to form an overall composite. This composite is called Orthographic Ability (OA). The results from the 8-12 and 13-18- year-old forms can be combined to create three additional orthographic composites: Conventions (CO), Spelling Accuracy (SA), and Spelling Fluency (SF).Technical CharacteristicsThe TOC evidences a very high degree of reliability across all three types of reliability (coefficient alpha, test-retest, and scorer differences). Alphas for the composites range from .90 to .98 and from .81 to .97 for the subtests. TOC also possesses strong content-description, criterion-prediction, and construct-identification validity indicating it can be used with confidence. The Orthographic Ability Index correlates in the .70s with 10 popular measures of reading and writing.
COMPLETE TOC (©2008) KIT INCLUDES: