It's a testable theory, tw--they went to modern-day tribes, who are just as evolved but speak different languages, and performed a lengthy series of visual color tests. In the book I mentioned, they also go into how spatial awareness and counting are affected by language. For example, some cultures describe directions in concentric circles instead of cardinal north and south, and their spatial skills are vastly different--better in some ways, worse in others--than those of the average adult English speaker's.
|