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

https://rock-paper-scissors-gambling-q-j-x-a3-233.swiftnestly.com/posts/how-much-do-rock-paper-scissors-gambling-experts-make

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