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

https://rock-paper-scissors-gambling-c-d-u-o7-600.quantlynix.com/posts/the-10-most-terrifying-things-about-rock-paper-scissors-gambling

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?