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

https://rock-paper-scissors-gambling-game-b-t-g-d0-578.cloudhinter.com/posts/don-t-make-this-silly-mistake-with-your-rock-paper-scissors

Some players use Rock Paper Scissors to check timing and psychology-- do you go first, mirror moves, or all of a sudden switch strategies to confuse them?