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

https://rps-gambling-m-v-u-w4-018.silverstonebrief.com/posts/15-of-the-best-pinterest-boards-of-all-time-about-rock-paper-scissors

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