Actually, it is normal for 18month old toddlers to do this sort of thing, whether or not they are a lone quad or whether or not a new baby has just been born into the family or whether or not anything good or bad is happening in the toddler's world! Part of the problem is that this age child often lacks the vocabulary to express his frustrations and therefore he resorts to body language and noise. Some kids are more intense than others but even very intense behavior at this age is common and normal. Nonetheless, we'd like to help our youngsters to feel less agitated. One way you can try to help him, if you'd like to experiment, is with Bach Flower Therapy. You can learn more about it at www.bachcentre.com. You should consider the remedies "vine" (for those who need to have things their way) and "cherry plum" for those who are losing control. You can also consult a Bach Flower practitioner. The remedies help the child to handle stress in a calmer, healthier fashion, reducing the frequency and intensity of flip-outs. The remedies are not only harmless, they are actually helpful in that they heal the child's tendency to feel miserable.   Sarah Chana

I think they're all like that at this age.

Babies are one thing but toddlers are another. This is just the beginning....get used to it! Your girls will start next, but don't blame your son. It's not just copy cat stuff - it's developmental. But don't worry, it improves when they're a little older. And then there will be other antics to deal with.   An experienced mom.