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

https://rock-paper-scissors-z-q-u-r7-559.summitquill.com/posts/the-people-who-are-closest-to-rock-paper-scissors-gambling-uncover-big-secrets

Some players utilize Rock Paper Scissors to check timing and psychology-- do you go initially, mirror moves, or suddenly switch methods to confuse them?