For values like research, you have to edit the base bonus. Editing the value of your total bonus is useless as the game will recalculate the correct value. This is for version 1.05. Also, when I changed the research bonus to 1000, the research bonus no longer showed up in the stat screen, but the techs started flying by so it worked. If anyone know the max values for these stats, that'd be appreciated too.
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The values dissapear at +999% (I reported this along time ago... the solution was to make it difficult to do, which also solved a balance problem in the process, or more likely fixing the balance problem made this irrelevant...same end effect either way), but there is no known limit, as of yet. I'd assume that it's a signed short (+32767% would be the max), but it might not be. I know from experience that Soldering, at the least, works as far as +8000%.
Creativity probably doesn't do much beyond a certain point, though, since it's effect is simply to give a chance to pick up the tech earlier.
~SDC~