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Title page for ETD etd-03252014-185610

Type of Document Master's Thesis
Author Cho, Eunsoo
Author's Email Address eunsoo.cho@vanderbilt.edu
URN etd-03252014-185610
Title Examining the Predictive Validity of a Dynamic Assessment of Decoding to Forecast Response to Tier 2 Intervention
Degree Master of Science
Department Special Education
Advisory Committee
Advisor Name Title
Donald L. Compton Committee Chair
Lynn S. Fuchs Committee Member
  • response to intervention; dynamic assessment; word reading; individual growth modeling
Date of Defense 2012-10-15
Availability unrestricted
The purpose of this study was to examine the role of a dynamic assessment (DA) of decoding in predicting responsiveness to Tier 2 small group tutoring in a response-to-intervention model. First-grade students (n=134) who did not show adequate progress in Tier 1 based on 6 weeks of progress monitoring received Tier 2 small-group tutoring in reading for 14 weeks. Student responsiveness to Tier 2 was assessed weekly with word identification fluency (WIF). A series of conditional individual growth curve analyses were completed that modeled the correlates of WIF growth (final level of performance and growth). Its purpose was to examine the predictive validity of DA in the presence of 3 sets of variables: static decoding measures, Tier 1 responsiveness indicators, and pre-reading variables (phonemic awareness, rapid letter naming, oral vocabulary, and IQ). DA was a significant predictor of final level and growth, uniquely explaining 3% - 13% of the variances in Tier 2 responsiveness depending on the competing predictors in the model and WIF outcome (final level of performance or growth). Although the additional variances explained uniquely by DA were relatively small, results indicate the potential of DA in identifying Tier 2 nonresponders.
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