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

https://rock-paper-scissors-gambling-e-w-g-d2-975.urbanvellum.com/posts/wisdom-on-rps-gambling-from-a-five-year-old

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