The longer the test, the more reliable it is - up to a point. Howard Wainer and Richard Feinberg expose the costs and hours lost in pursuit of marginal gains and worthless subscores.
CITATION STYLE
Wainer, H., & Feinberg, R. (2015). For want of a nail: Why unnecessarily long tests may be impeding the progress of Western civilisation. Significance, 12(1), 16–21. https://doi.org/10.1111/j.1740-9713.2015.00797.x
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