In this case, the mapping between number and color is constant. for this person, the number 3 generally appears red, while the number 7 generally appears green. one way to test whether someone actually has this form of synesthesia is to have the person hunt for shapes hidden in an array of similar-looking numbers. for example, the following array contains 5s organized into a shape among 2s. what results would you expect when comparing participants with grapheme-color synesthesia against controls?