@HistoPol @VulcanTourist @MaJ1
With smaller kids it's just watching for signs of distress - unhappy rocking, covering ears or eyes, hiding/averting gaze, difficulty with speech, etc etc.
It's just doing what all parents do to look out for their kids, but with a keen understanding that your kid might be pushed to their limits by things that don't bother other kids. [Getting irritated at their being "unreasonable" & telling them to stop "making a fuss about nothing" is unlikely to help.]