Relative blindsight arises from a criterion confound in metacontrast masking: Implications for theories of consciousness

► Uniformity of criterion content is essential to demonstrate relative blindsight (RBS). ► A recent report of RBS was marred by a confound due to a shift in criterion content. ► With criterion content held constant, there was no evidence of relative blindsight. ► The purported relative blindsight was also affected by criterion level.