@Anking-maintainers it should definitely be one or the other. The main text says three and the AMBOSS table says three. One of the practice questions must say 4 though because otherwise that text wouldn’t be in extra. Play with others might not seem the same as cooperative play but the AMBOSS table doesn’t differentiate between the two. I think maybe just replace the top text in the extra section with “cooperative play emerges between ages 3-4?”
Someone just needs to check UW table (can find in any developmental Step 1 or 2 questions) - we bulk updated awhile ago and may have missed this, idk which is correct (fairly certain it is cooperative by 3, though)
Just checked - table is correct according to UW and AMBOSS