I can assure you my way is empirical and all major hypotheses are directly testable (via direct observation of overt behavior patterns). It is a viable approach, with all testable hypotheses, and with explicit, well-founded and biologically-consistent assumptions behind it all. Eye-tracking technology will be needed and perhaps computer-assisted analysis. FIRST, See:
http://tiny.cc/ethogram AND
then you must see the recent LARGE Collection of Essays explicating and fully justifying my approach and clearly indicating the positive consequences and ramifications : HERE'S the BOOK:
http://tiny.cc/collectedEssays
* PLUS * : YOU MUST SEE THE COMMENT _AND_ THE 2 REPLIES TO THAT COMMENT (below the BOOK's shown text), to have all the needed specifics.
EYE-TRACKERS: If you do not want to read as much as I ask people to do above, you should be able to get a pretty good idea of what would be involved and if you could do it by just reading COMMENT _AND_ THE 2 REPLIES TO THAT COMMENT on the same page as the BOOK. (This is less than 10 pages.)
--> Can modern eye-trackers do what I clearly indicate needs to be done?