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Updated: Jun 10, 2026

Decomposing the Variance in Reading Comprehension to Reveal the Unique and Common Effects of Language and Decoding
Published on: October 11, 2018
Reading comprehension among typically developing Swedish-speaking 10-12-year-olds: examining subgroups differentiated
Jakob Asberg1, Marika Carlsson, Ann-Marie Oderstam
1University of Gothenburg, Department of Psychology, Box 500, Göteborg 40530, Sweden. psyjaas@psy.gu.se
Abstract:
Based on data from 156 typically developing 10-12-year-olds from Sweden, reading comprehension skills were studied in three subgroups: those classified with specific poor word decoding skills (n = 10), those with specific poor language comprehension (n = 12), and those with mixed difficulties in word decoding and language comprehension (n = 11). The mixed poor group achieved significantly lower scores than both specific groups in reading comprehension, and was the only group displaying poor reading comprehension test results relative to the performance of the full sample. Results are indicative of the necessity of a combined effect of poor word decoding and language in reading comprehension difficulties for this group. Implications and limitations are discussed.
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