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

https://rock-paper-scissors-k-q-v-l2-432.cloudhinter.com/posts/how-do-you-explain-rock-paper-scissors-to-a-five-year-old

Some gamers use Rock Paper Scissors to check timing and psychology-- do you go first, mirror relocations, or suddenly switch strategies to confuse them?