This paper is an empirical inquiry into the nature of human communication and understanding. It is organized into three sections. First, there is an overview of the ethnomethodological critique of mainstream social scientific research methodology and the relevance of this critique to clinical behavioral research. Second, the details of an ethnomethodological study of communication practices in a family with an alingual, deaf-blind child are provided. Third, implications of the case study are presented.

In 1970 the voting age in Canada changed from 21 to 18. Since then, there have been calls to lower it further, most commonly to age 16. Against the motion, however, it has been argued that youth may lack the ability to exercise a mature and informed vote. This paper argues against that worry and shows how restricting youth from voting on the basis of a misbelief about their abilities amounts to an epistemic injustice.