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Can some black-white differences in reading achievement be traced to differences in language background? Many African American children speak a dialect that differs from the mainstream dialect emphasized in school. We examined how use of alternative dialects affects decoding, an important component of early reading and marker of reading development. Behavioral data show that use of the alternative pronunciations of words in different dialects affects reading aloud in developing readers, with larger effects for children who use more African American English (AAE). Mechanisms underlying this effect were explored with a computational model, investigating factors affecting reading acquisition. The results indicate that the achievement gap may be due in part to differences in task complexity: children whose home and school dialects differ are at greater risk for reading difficulties because tasks such as learning to decode are more complex for them.

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Abstract— A growing body of research suggests that the use of concrete materials is not a sure‐fire strategy for helping children succeed in the classroom. Instead, concrete materials can help or hinder learning, depending on a number of different factors. Taken together, the articles in this issue highlight the complexities involved in using concrete materials in the classroom and warn educators and researchers that students’ learning from concrete materials can be derailed in a number of ways, such as (a) choosing the wrong types of materials, (b) structuring the environment in ways that do not support learning from concrete materials, and (c) failing to connect concrete representations to abstract representations. Each of these problems is discussed and some potential solutions are offered.

Purpose This study was designed to examine the relationships among minority dialect use, language ability, and young AAE-speaking children’s understanding and awareness of MAE. Methods 83 4- to 8-year-old African American English-speaking children participated in two experimental tasks. One task evaluated their awareness of differences between Mainstream American English (MAE) and African American English (AAE), while the other evaluated their lexical comprehension of MAE in contexts that were ambiguous in AAE but unambiguous in MAE. Receptive and expressive vocabulary, receptive syntax, and dialect density were also assessed. Results The results of a series of mixed-effect models showed that children with larger expressive vocabularies performed better on both experimental tasks, relative to children with smaller expressive vocabularies. Dialect density was a significant predictor only of MAE lexical comprehension; children with higher levels of dialect density were less accurate on this task. Conclusions Both vocabulary size and dialect density independently influenced MAE lexical comprehension. The results suggest that children with high levels of non-mainstream dialect use have more difficulty understanding words in MAE, at least in challenging contexts and suggest directions for future research.