Unless the Spearman-Brown is used, split-half reliability values tend to be
A) lower than test-retest values
B) higher than test-retest values
C) identical with test-retest values (for the same test)
D) sometimes higher and sometimes lower, depending on which trait is being

Question

Quizplus · Accepted Answer

Split-half reliability values tend to be lower than test-retest values unless the Spearman-Brown formula is used to correct for the shortened test length in split-half reliability estimation.

Unless the Spearman-Brown Is Used, Split-Half Reliability Values Tend to Be