Cognitive development and reading: The relation of reading-specific multiple classification skill to reading comprehension in elementary school children

Cognitive flexibility, the ability to consider multiple aspects of stimuli simultaneously, develops over the elementary school years and can be measured with a multiple classification task. Although prior research indicates a significant relation between domain-general multiple classification skill (e.g., classifying objects by shape and color simultaneously) and reading, a precise relation between these abilities has not been found. A reading-specific multiple classification task was designed that required children to classify printed words along phonological and semantic dimensions simultaneously. Reading-specific multiple classification skill made a unique contribution to children's reading comprehension over the contributions made by children's age, domain-general multiple classification skill, decoding skill, and verbal ability. Additionally, training in reading-specific multiple classification facilitated children's reading comprehension.