Flaugher, R. L., Melton, R. S., and Myers, C. T.A Study of the Effects of Item Rearrangement. Research Bulletin66-39, Educational Testing Service, Princeton, New Jersey, 1966.
2.
Gulliksen, H. and Wilks, S. S.Regression Tests for Several Samples. Psychometrika, 1950, 15, 91-114.
3.
MacNicol, Katherine.Effects of Varying Order of Item Difficulty in an Unspeeded Verbal Test. Unpublished manuscript, Educational Testing Service, Princeton, New Jersey , 1956.
4.
Mollenkopf, W. G.An Experimental Study of the Effects on Item-Analysis Data of Changing Item Placement and Test Time Limit. Psychometrika, 1950, 15, 291-315.