Ok - ds is just 14 months. He's coming on really well with his speech and also using baby signing. He seems to be very observant and very capable in most areas (shape sorting toys are now mastered, following simple instructions etc). But he will not stack cups!
The only reason I ask is that every book/magazine/web site which bangs on about milestones (must speak Swahili by 3 weeks etc) always mention stacking X amount of cups by a certain age. Ds will only knock them down. Why are stacking cups of all things seen as such a yardstick for development. Do they demonstrate something really significant? If so, is it a problem that ds won't stack cups?
I don't think he's shown any developmental problems. I'm just really curious as to what piling stuff on top of things is meant to indicate. Any ideas?? Should I start worrying?