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

https://rock-paper-scissors-c-f-n-i9-754.vantagequill.com/posts/15-terms-everyone-working-in-the-rps-gambling-industry-should-know

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