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

https://rps-gambling-f-u-y-d1-670.summitviewdaily.com/posts/7-things-about-rock-paper-scissors-you-ll-kick-yourself-for-not-knowing

Some gamers use Rock Paper Scissors to test timing and psychology-- do you go first, mirror moves, or suddenly switch techniques to confuse them?