Key references:
Richmond, V. P., Wrench, J. S., & Gorham, J.(2001).Communication, affect, and learning in the classroom. Acton, MA: Tapestry Press
Primary use / Purpose:
Background:
The Classroom Anxiety Measure (CAM) is based on Richmond's Situational Communication Apprehension Measure developed by McCroskey and Richmond (1982, 1985) to measure state communication apprehension in any context.
Psychometrics:
You can expect an alpha reliability on this measure of about .90. For more information on psychometric properties of instrument see Richmond, V. P., Wrench, J. S., & Gorham, J.(2001).Communication, affect, and learning in the classroom. Acton, MA: Tapestry Press.