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

https://rps-gambling-n-d-j-n5-806.fairmontdigest.com/posts/15-up-and-coming-rock-paper-scissors-bloggers-you-need-to-keep-an-eye-on

Some players use Rock Paper Scissors to evaluate timing and psychology-- do you go first, mirror relocations, or suddenly switch techniques to confuse them?