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

https://rps-gambling-u-i-n-p9-339.dovetailscope.com/posts/5-laws-that-anyone-working-in-rock-paper-scissors-should-be-aware-of

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