Some players utilize Rock Paper Scissors to test timing and psychology-- do you go first, mirror relocations

https://rock-paper-scissors-e-e-p-l6-023.pinehavenscope.com/posts/this-is-the-myths-and-facts-behind-rock-paper-scissors

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