DIF is most commonly used to assess fairness aspects in the process of instrument development and adaptation (Ackerman 1992; Roussos and Stout 1996) by checking whether individual items operate differently for different test subgroups, thus detecting violations of validity.
In other words, many business representatives seem to interpret tests differently from test designers.
Second, the aim of weighting for common variants is to relieve the problem of multiple hypotheses testing by punishing different tests differently through the weights they are assigned.
These will not, of course, take any account of the "Flynn effect"—the substantial cross-generational rise in average IQ scores which affects different tests differently and affects variances and distributions as well as means (Flynn, 2007; Wai & Ptallaz, 2011).
Gene length affected the performance of different tests quite differently (figure 8).
Further research is needed to better characterize those patients whose glycemic status might be categorized differently by two different tests (e.g., FPG and A1C), obtained in close temporal approximation.
Analyses focused on comparisons between ranks assigned each test on preference and the other assessed attributes, and included Friedman's test for ranks (to test the hypothesis that ranks differed for different tests) and the Wilcoxon signed-ranks test (to test the hypothesis that pairs of tests were differently ranked).
Moreover, a visualization study of differently oriented test piece at a different heating rate and different phase of boiling has been qualitatively discussed.
The proposed algorithms were empirically tested and compared by using various sets of differently sized test data: some theoretical classes of graphs with known optimal solutions and some special classes of graphs chosen from the literature for the k-minimum spanning tree and Roman domination problems.
Black shapes were used as elements for training stimuli, while during testing, shapes were differently colored (testing shapes were never black, and all shapes could, but did not necessarily, differ in color).
Studies in mice show that animals of the same inbred strain reared in different facilities, behave differently when tested by the same protocol (see, e.g., [ 23].
