Can synesthesia be picked up from one’s environment? If “number forms” is a type of synesthesia then there seems to be some evidence for it. Here’s an image of a number form example from Wikipedia that shows the numbers 1-12 in the shape of an clock face:
There’s also a repeat of the general shape between 101 and 112.
Check out Neurocritic’s post on Fisher Price Synesthesia:
a new study has identified 11 synesthetes whose grapheme-color mappings appear to be based on the Fisher Price plastic letter set made between 1972-1990…
…the resultant mappings were “startlingly similar” to the colors used in the Fisher Price toys from their childhoods! And 10 of the 11 participants reported owning the colorful plastic magnetic letters.
Check out the article and also the comments below it. Let me know what you think…
For people who are interested in synesthesia, there is also a discussion thread on this site about a synesthesia training program idea.