The field of education of deaf and hard of hearing (DHH) students has a paucity of evidence-based practices (EBPs) to guide instruction. The authors discussed how the research methodology of single-case design (SCD) can be used to build EBPs through direct and systematic replication of studies. An overview of SCD research methods is presented, including an explanation of how internal and external validity issues are addressed, and why SCD is appropriate for intervention research with DHH children. The authors then examine the SCD research in the field according to quality indicators (QIs; at the individual level and as a body of evidence) to determine the existing evidence base. Finally, future replication areas are recommended to fill the gaps in SCD research with students who are DHH in order to add to the evidence base in the field.

Single-Case Design Research: Building the Evidence-Base in the Field of Education of Deaf and Hard of Hearing Students

/pdf/developing-a-written-language-inventory-for-deaf-and-hard-of-3m4zllkqaz.pdf

Developing a Written Language Inventory for Deaf and Hard of Hearing Students: A Systemic Functional Grammar Approach

/pdf/the-effects-of-treatment-integrity-on-vocabulary-learning-in-1vmzgpvat3.pdf

The Effects of Treatment Integrity on Vocabulary Learning in Students Who are Deaf or Hard of Hearing

Abstract This study uses discourse analysis to investigate the connectedness between embodiment and the politics of orthography. Drawing on a video-recorded conversation from a large sociolinguistic dataset on Amazigh/Berber, the study examines the role of embodied acts not only as semiotic resources that elaborate talk but also as consequential discursive entities that organize political arguments about script. The participants use multimodal utterances that extend beyond meaning to iconize social orientation as well as power in conversation. Analysis of the video reveals the way participants map their social perceptions of the language and its script onto their talk and embodied actions. Analysis also shows how script arguments mirror larger political debates in Morocco, in which script preferences are based on ideological and political orientations.

Multimodal arguments: language, script, and politics

It was the purpose of this study to examine the effect of supplementing the pragmatically-based procedure of focused stimulation with structured opportunities for verbal practice using vertical constructions. This procedure was employed to facilitate the use of the modal verbs “should” and “must” and their communicative function of obligation as treatment targets. An equal phase interaction additive single subject experimental design was employed to address this question with the presence or absence of a vertical construction component being experimentally manipulated. Results indicated that focused stimulation was an effective treatment procedure and the additional component of a vertical construction enhanced that effectiveness.

Discourse-Based Language Intervention: An Efficacy Study.

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Discourse-Based Language Intervention: An Efficacy Study.