I've tried a few techniques to try getting in a person's head while playing, but I wouldn't have any idea how to measure it. Some techniques are on the board,

I've tried a few techniques to try getting in a person's head while playing, but I wouldn't have any idea how to measure it. Some techniques are on the board, but some aren't. One thing I've tried is just staring at the player. I've also tried just barely glancing at the board and making the move on my turn while actually doing my studying on their turn. The funniest thing that someone tried against me was playing a guitar while also playing chess. This was in a local tournament in college. Half way into the game, he stopped and exclaimed "What am I doing??" and tried to play serious from that point forward. Luckily for me, he waited too late.