Shaun D. Carstairs (shaunc at alumni.caltech.edu) wrote:
: Yes. There exists a region on the dorsal surface of the temporal lobe
: known as the planum temporale. In most people, it is larger on the
: left side than on the right; most people are also dominant for language
: on the left side. However, this is not a 100% correlation, but merely
: a good indicator of linguistic dominance.
It is merely a correlation, a useful predictor. There is no proof of
an operational relationship between the asymmetry and dominance.
Kal