capitalism
capitalism
Most, but the age has been steadily raising since the introduction of disposable diapers.
Many other countries have their kids potty trained by six months, as we used to.
i see 18 months, not 3 years.
6 months is absurd. Do you have children?
4 & 5 from anecdotal data - friends/relatives in day care. Those are outliers but they do fit the trend.
Around 6 months is extremely common in places which use “elimination communication.” The article I linked described this.
I don’t have children but consider myself both an academic and personal stakeholder - ie, I’ve changed a fair amount of diapers and I have taught parents how to parent to reasonable success.
I personally was potty trained at 4 - as in, I have episodic memory of getting Pokémon stickers as a reward for shitting.