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

https://rock-paper-scissors-gambling-game-a-e-l-n1-084.stonefielddigest.com/posts/25-surprising-facts-about-rock-paper-scissors-gambling

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