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

https://rock-paper-scissors-s-m-c-m2-697.urbanvellum.com/posts/rock-paper-scissors-gambling-101-the-ultimate-guide-for-beginners

Some gamers use Rock Paper Scissors to test timing and psychology-- do you go first, mirror moves, or suddenly switch techniques to puzzle them?