Instruction: The Forgotten Variable?: A Discussion of Methodological Issues in the Investigation of Sensory Communication Aids

The paper discusses the need to exercise greater experimental control over instructional variables in the investigation of sensory communication aids for the deaf. An analysis of several recent papers with respect to control of instructional variables, the need for better procedural descriptions in research reports and its relationship to evaluation of experimental outcomes is also discussed. The authors suggest a minimal set of critical instructional variables that should be taken into consideration on the design and implementation of studies evaluating sensory communication aids.