Synaesthesia: learned or lost?
Article first published online: 5 FEB 2009
© 2009 The Authors. Journal compilation © 2009 Blackwell Publishing Ltd
Volume 12, Issue 3, pages 484–491, May 2009
How to Cite
Kadosh, R. C., Henik, A. and Walsh, V. (2009), Synaesthesia: learned or lost?. Developmental Science, 12: 484–491. doi: 10.1111/j.1467-7687.2008.00798.x
- Issue published online: 30 MAR 2009
- Article first published online: 5 FEB 2009
- Received: 10 December 2007 Accepted: 27 April 2008
The question why synaesthesia, an atypical binding within or between modalities, occurs is both enduring and important. Two explanations have been provided: (1) a congenital explanation: we are all born as synaesthetes but most of us subsequently lose the experience due to brain development; (2) a learning explanation: synaesthesia is related to some learning process during childhood. Three recent studies provide conflicting support for these explanations. Two studies supported the idea that synaesthesia is learned by showing that the frequency of everyday language implicitly modulates the synaesthetic experience. Another study argued that synaesthesia reflects basic, innate magnitude representations. In this paper we reassess these points of view, and show that it is possible for both to be valid. These findings are integrated into an interactive specialization account of development in order to explain the neuronal mechanism underlying synaesthesia.