Fully developed definitions of evidence-based practice incorporate evidence from family perspectives, as well as evidence from research on the effectiveness of particular interventions. Systems for appraising research evidence typically place qualitative analyses at lower levels. The argument in this article is that qualitative data offer a…

Conclusions are drawn from a review of research on characteristics of material input to hearing impaired children, including that the use of imperatives alone is not sufficient to predict later outcomes and some aspects of the mother's repertoire may be tied to her sense of control over the world. (CL)