Nearly all children, no matter how placid they were as babies, go through a stage of what the experts call ‘negative behavior.’ Such tantrums are common in the second year, carry on into the third, when it begins to decline until the primary school years when most children are reasonably peaceful.
It’s a mistake to think that outbursts of temper and aggression between 15 and 36 months mean that your child is being wicked and naughty. The problem is that these months are a period of very rapid development.