1. Reliability of Content Analysis: The Case of Nominal Scale Coding
2. An Exploratory Study of the Verbal and Nonverbal Behaviors of Biology Teachers and Their Relationship to Selected Personality Traits. Doctoral thesis, The Ohio State University, Columbus, Ohio, 1968.
3. An Exploratory Investigation of the Verbal and Nonverbal Behaviors of BSCS Teachers and Non-BSCS Teachers. Doctoral thesis, The Ohio State University, Columbia, Ohio, 1968.
4. Interaction Analysis in the Classroom. College of Education, University of Minnesota, Minneapolis, 1960.