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

https://rock-paper-scissors-b-f-i-h9-128.keystonescope.com/posts/20-rising-stars-to-watch-in-the-rock-paper-scissors-gambling-game-industry

Some players utilize Rock Paper Scissors to evaluate timing and psychology-- do you go first, mirror moves, or suddenly switch strategies to confuse them?