H F DINGMAN

Statistical expectations of selected handicaps in the mentally retarded.

H. Dingman, C. Miller, G TARJAN, 1960, American journal of mental deficiency.

A modification of the method of equal-appearing-intervals.

J P GUILFORD, J. Guilford, H. Dingman, 1955, The American journal of psychology.

A validation study of ratio-judgment methods.

J P GUILFORD, J. Guilford, H. Dingman, 1954, The American journal of psychology.