Brogden, H. E. "A New Coefficient: Application to Biserial Correlation and to Estimation of Selective Efficiency ." Psychometrika, XXIV (1949), 169- 182 .
2.
Guilford, J. P. "The Difficulty of a Test and Its Factor Composition." Psychometrika, VI (1941), 67 -77.
3.
Guilford, J. P., and Michael, W. B.The Prediction of Categories from Measurements. Beverly Hills: Sheridan Supply Company , 1949.
4.
Guttman, L. "The Qualitative Prediction of a Qualitative Variate." In Horst, P. (Ed), The Prediction of Personal Adjustment. New York: Social Science Research Council, 1941, pp. 258-263 .
5.
Hildreth, H. M. "Single-Item Tests for Psychometric Screening." Journal of Applied Psychology , XXIX, (1945), 262-267.
6.
Katzell, R. A., and Cureton, E. E. "Biserial Correlation and Prediction ." Journal of Psychology, XXIV (1947 ), 273-278.
7.
Otis, J., and Chesler, D. J. "Classification Test for Industrial and Office Personnel." Journal of Applied PsychologyXXXIII, (1949), 147 -150.
8.
Tiffin, J., and Lawshe, C. H. "The Adaptability Test: a Fifteen Minute Mental Alertness Test for Use in Personnel Administration ." Journal of Applied Psychology, XXVII (1943), 152- 63 .
9.
Wechsler, D.The Measurement of Adult Intelligence . 3d. Edition. Baltimore : Williams & Wilkins.
10.
Wonderlic, E. F., and Hovland, C. I. "The Personnel Test: a Restandardized Abridgement of the Otis S-A for Business and Industrial Use." Journal of Applied PsychologyXXIII , (1939), 685- 702 .