Do You See What I See?

Try out the following online tests & experiments for synesthesia:

• David Eagleman's 'Synesthesia Battery' is the most comprehensive synesthesia test I've found so far & excellent for synesthetes who want explore a possibly extended range of their gifts, especially as research is showing that 40% of synesthetes have more than one form of synesthesia. The site lists a wide range of possible synesthetic combinations for testing, including musical-instruments>color, sound>smell, Chinese grapheme>color and orgasm>color. Disappointingly, when I checked the box that applied to me, sound>taste, I was immediately directed to a Results page which thanked me for my participation. For me, took about 1 minute to complete.
  
  
  
• The BBC's charmingly named Do you see what I see?, from which I appropriated the title of this post, hosts a single test for grapheme-color synesthesia and spatial-sequence (number form) synesthesia. About 10 minutes.
  
  

• BU's Synesthesia Project has a great test for non-graphemic shapes>color synesthesia. The Project's research on grapheme-color synesthesia found that many synesthetes report having colored basic shapes, including triangles and squares, in addition to their colored letters and/or numbers. Are you one of them? Take the 'Non-Graphemic Shape Battery' here. About 20 minutes.