The primary research problem confronting many experimental researchers is finding valid stimulus (instructional) and criterial (testing) materials that operationally fit their hypotheses. Five experimental studies have been completed, and two are in progress, using the Dwyer instructional materials to address the problem of finding valid…

Reports the results of a feasibility study exploring the use of visual information for vowel production training in a foreign language. After 10 minutes of visual articulatory modeling and shaping, a native Spanish speaker improved her ability to produce a tongue position difference between English and Spanish vowels. (57 references) (Author/CB)

A project on videodisc technology sponsored by the Illinois State Board of Education has captured classroom teachers teaching in their own classrooms to their own students. By digitizing this video instruction onto videodiscs preservice teachers and instructors have a visual learning tool that provides instant access to a variety of pedagogical…