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

https://rock-paper-scissors-gambling-s-f-j-m3-918.vantagequill.com/posts/unexpected-business-strategies-that-aided-rock-paper-scissors-gambling-achieve-success

Some gamers use Rock Paper Scissors to check timing and psychology-- do you go first, mirror relocations, or suddenly switch methods to confuse them?