Why do kids write some numbers and letters in mirror image?

Question

I’ve been practicing the ABCs and 123s with my son and notice that certain letters (J N P S Z) and numbers (4 6) he always writes backwards/mirror imaged. I’ve seen other kids, and even my own writings as a child, have the same quirk. Is this pretty much universal?

In: 1018

Answer 1

…i couldn’t distinguish left from right until i was about fifteen years old, and i frequently reversed letters when i was younger…to me, differences in chirality seemed arbitrary, so i never understood how it mattered topologically and i couldn’t perceive the distinction…