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

https://rock-paper-scissors-gambling-game-c-p-p-s8-433.birchreport.com/posts/10-things-everyone-has-to-say-about-rock-paper-scissors

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