Oral and written discourse skills in deaf and hard of hearing children: The role of reading and verbal working memory

Arfé, B. (2015). Oral and written discourse skills in deaf and hard of hearing children: The role of reading and verbal working memory. Topics in Language Disorders, 35(2), 180-197. https://doi.org/10.1097/TLD.0000000000000054

Discourse skills include a person’s ability to organize and communicate information, such as a narrative or story. Storytelling requires one to use linguistic skills (e.g., knowledge of what words mean and how to combine them into a sentence) and cognitive-linguistic skills (e.g., using word knowledge to make connections between different parts of a story). How one uses these storytelling skills can look different depending on whether they tell the story aloud (orally) or in writing. For example, a written story can be revised, allowing for more control of the story being told. However, written storytelling also requires that attention is given to the writing process, which uses greater cognitive resources. Both written and oral storytelling requires holding information in one’s memory, which can challenge one’s working memory as well (e.g., with the need to hold onto information, and/or the need to hold information while performing other tasks). One important discourse skill for storytelling is the ability to tie together pieces of a story, or to generate coherence relations – meaningful links between parts of a story. These storytelling skills are difficult for children who are deaf and hard of hearing (DHH). DHH children have varied language backgrounds but often have limited access to spoken language and limited experience with storytelling in sign language. 

In a study addressing the discourse skills of DHH children, Arfé compared the written and oral narrative skills of DHH children (aged 7-15) to a group of school-age matched hearing peers (aged 7-13). Children were asked to tell a story (both orally and in writing) based on the wordless picture storybook. A standardized reading comprehension task and measures of working memory (forward and backward digit span tasks) were also used. Researchers considered the productivity (the number of words and clauses produced), story structure (the number of story grammar elements included; e.g., setting, initiating event, two or more episodes, and conclusion), and coherence (the meaningful relations between clauses within the story) as measures of discourse.

Arfé found that the hearing children scored higher than the DHH children on reading skills and measures of working memory. For oral stories, hearing and DHH children produced stories of similar number of words and used the same number of story structure elements. DHH children produced more clauses than hearing children, while hearing children produced more coherence relations than DHH children. For written stories, hearing and DHH children produced an equivalent number of clauses, but hearing children outperformed DHH children on measures of number of words, story structure elements included, and coherence relations.

Overall, the discourse skills of DHH children were poorer than those of their hearing peers, but this difference was more pronounced in written storytelling. DHH children need support in the classroom for the development of both oral and written discourse skills, and may benefit from addressing poor working memory skills as well. Exposing DHH children to narratives or teaching them how to construct stories may not be enough to help develop these skills. Additional support will likely be needed, for example, through scaffolding and collaborative writing, story elaboration, and story retelling, both in oral and written language.

Blogger: Rachel Benninger is a combined MClSc/PhD candidate working under the supervision of Dr. Lisa Archibald