Ms. [Concetta] Antico sought out testing to see if she had a fourth cone cell, and the result was positive. Cognitive scientist Kimberley Jameson of the Color Cognition Laboratory at the University of California, Irvine, knew instantly that Ms. Antico was unusual, since “in addition to the genetic potential for tetrachromacy, Concetta has a considerable history of art training. She evaluates the uses of color and light, making hundreds of color space decisions every day.”

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