1. Ahlgren , A. 1969 Confidence marking and predicting retention Abstract of a paper read at A.E.R.A., Los Angeles (mimeograph)
2. Archer , N. S. 1963 Effects of confidence weighting by 5th and 6th grade students on objective test scores Abstract of a paper read at the A.E.R.A., Chicago (mimeograph)
3. Confidence weighting in test reliability;Ebel;J. educ. Meas.,1965
4. Shuford , Jr. , E. H. 1969 Systems of confidence weighting: theory and practice Abstract of a paper read at A.E.R.A., Los Angeles (mimeograph)