This Java-Applet is the prototype of a synaesthesia test. It is neither complete nor precise, but you can help us to improve it. Please answer all questions without haste, but as spontaneously as possible. On the last page you will see your personal probability (in percent) for letter and sound synaesthesia.
If you like to help us to improve the test (without any work for you), please send to us your result and whatever you want to tell us about the test. Did you miss important answers are the questions inappropriate?