Some players utilize Rock Paper Scissors to test timing and psychology-- do you go first, mirror moves

https://rock-paper-scissors-gambling-game-h-j-o-m6-146.greyhavendaily.com/posts/the-most-popular-rock-paper-scissors-gambling-the-gurus-are-using-3-things

Some players utilize Rock Paper Scissors to check timing and psychology-- do you go initially, mirror moves, or all of a sudden switch techniques to confuse them?