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

My brother did this when he was in the first grade. My mother had his eyes examined and he needed glasses. He got them and immediately stopped. He only wore them for about six or eight months and never needed them after.