Recent years have witnessed a growing public interest in human tetrachromacy – the possibility that a subpopulation of women enjoy an extra dimension of color vision. Yet, by contrast, rigorous… Click to show full abstract
Recent years have witnessed a growing public interest in human tetrachromacy – the possibility that a subpopulation of women enjoy an extra dimension of color vision. Yet, by contrast, rigorous studies of this unusual phenotype are sparse. The aim here is to offer the reader a guide to the facts and myths regarding this potential ‘superpower’ and to address the core methodological issues that need to be considered when investigating it.
               
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