Examining the Underlying Dimensions of Morphological Awareness and Vocabulary Knowledge.

We report results from two studies on the underlying dimensions of morphological awareness and vocabulary knowledge in elementary-aged children. In Study 1, 99 fourth-grade students were given multiple measures of morphological awareness and vocabulary. A single factor accounted for individual differences in all morphology and vocabulary assessments.

Functional MRI activation in children with and without dyslexia during pseudoword aural repeat and visual decode: before and after treatment.

Children without dyslexia (n=10) received nonphonological treatment, and those with dyslexia received phonological (n=11) or nonphonological (n=9) treatment. Before and after treatment they performed aural repeat, visual decode, and aural match pseudoword tasks during functional MRI scanning that separated stimulus input from response production. Group map analysis indicated that children with dyslexia overactivated compared with good readers during the aural-repeat/aural-match contrast in bilateral frontal (Brodmann's area [BA] 3, 4, 5, 6, 9), left parietal (BA 2, 3), left temporal (BA 38), and right temporal (BA 20, 21, 37) regions (stimulus input) and underactivated in right frontal (BA 24, 32) and right insula (BA 48) regions (response production); they underactivated in BA 19/V5 during the visual-decode/aural-match contrast (response production).

Changing models across cultures: associations of phonological awareness and morphological structure awareness with vocabulary and word recognition in second graders from Beijing, Hong Kong, Korea, and the United States.

Using data provided by approximately 100 second graders each from Beijing, Hong Kong, Korea, and the United States, we investigated relations among phonological awareness, morphological structure awareness, vocabulary, and word recognition. Our results indicate that across languages, phonological awareness and morphological structure awareness are similarly associated with one another and with vocabulary knowledge; however, phonological awareness and morphological structure awareness have different associations with word recognition in different scripts among second graders. Specifically, phonological awareness may be more important for reading in English and Korean than for reading in Chinese.