Advancing the science of spatial neglect rehabilitation: an improved statistical approach with mixed linear modeling.

Front Hum Neurosci · 2013 · PMC3657689 · PMID 23730283

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likely to be significantno p-value reported

Although one can test for violations of sphericity, these tests are sensitive to sample size and are likely to be significant with small violations of sphericity in large samples and, conversely, fail to reach significance with large violations of sphericity in small samples (Twisk, 2003 ).

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