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

https://rock-paper-scissors-m-l-e-t0-955.halcyonledger.com/posts/10-of-the-top-facebook-pages-of-all-time-about-rock-paper-scissors-casino

Some players use Rock Paper Scissors to test timing and psychology-- do you go initially, mirror relocations, or suddenly switch methods to puzzle them?