Heterogeneity in Reading Achievement and Mindset of Readers with Reading Difficulties.

Recent research has focused on evaluating the relation between mindset and reading achievement. We used exploratory factor mixture models (E-FMMs) to examine the heterogeneity in reading achievement and mindset of 650 fourth graders with reading difficulties. To build E-FMMs, we conducted confirmatory factor analyses to examine the factor structure of scores of (a) mindset, (b) reading, and (c) mindset/reading combined. Our results indicated (a) a 2-factor model for mindset (General Mindset vs. Reading Mindset), (b) a 2-factor model for reading (Word Reading vs. Comprehension; four covariances), and (c) a combined model with significant correlations across mindset and reading factors. We ran E-FMMs on the combined model. Overall, we found three classes of students. We situate these results within the existing literature and discuss implications for practice and research.