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

https://rock-paper-scissors-gambling-game-p-i-a-h9-065.quantlynix.com/posts/7-things-you-ve-never-learned-about-rock-paper-scissors

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