Interesting ... personality strongly mediates behaviour. How else would you "measure" personality? A strict behaviorist (in the line of Watson or Skinner) would say personality doesn't matter or even exist. It's like the life of a subatomic particle - you only know of its effect but what actually goes on in there is forever a mystery.

Unless you want to go psychodynamic on things but you'll have to start making excuses for Freud then!

I guess what I am proposing is not really testable. If behavior is the evidence of personality, maybe personality is always just a back-filled hand wavy explanation to describe the behavioral trends. I guess the reason I think that: there is evidence of that subatomic particle (personality) but it is very elusive.

Thanks for sharing — I am not very well read on psychology so I probably operate in ignorance a lot. Never enough time to read and learn everything I wish I could.

The nice thing about psychology, is understanding a little bit about how the mind works, means you can optimise for increasing your capacity to learn all sorts of other things!