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

https://rock-paper-scissors-m-l-e-t0-955.halcyonledger.com/posts/rock-paper-scissors-tips-from-the-best-in-the-industry

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