In my response to the commentaries made about my article, I observe that the commentators find no obvious errors with my estimates of the size of the signing deaf community. However, most of them are not as pessimistic as I am partly because of the position they take on a number of issues. Namely, the supposed uniqueness of Australia in its…

Johnston argues that the impact of science and technology on the Australian Deaf community threatens the viability of the community; this entails that the scientists have a moral duty to record and preserve Auslan for posterity. This response analyzes Johnston's moral imperative through the application of intrinsic and extrinsic values, suggesting…

Lack of student use of critical thinking operations can lead to faulty argumentation in discussing societal issues. Presents 12 common fallacies in student argumentation and discusses their implications for science education. (Contains 51 references.) (MDH)