Originally Posted by Fat Pippy
BTW, attacks that only raise a stat +1 (like harden) stay for the rest of the battle.
No, they just prevent the stat from decaying at the end of that round. If you use Harden this round, you end the round at +2 defence. I even got this clarified on IRC once. As far as I know, Intimidate is the only thing that causes permanent stat changes.