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

https://rock-paper-scissors-gambling-y-n-r-b8-579.terracolumn.com/posts/15-top-pinterest-boards-of-all-time-about-rps-gambling

Some gamers use Rock Paper Scissors to evaluate timing and psychology-- do you go initially, mirror relocations, or suddenly switch strategies to confuse them?