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

https://rps-gambling-m-f-i-r5-713.clarionvale.com/posts/how-rock-paper-scissors-has-changed-the-history-of-rock-paper-scissors

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