These areas all develop at different times and different rates so your child could be ahead in one area and still have some learning to do in another. For example, they might be OK with some of their ‘visible’ areas of development like their language skills. That can make it hard to see that their social and emotional skills may be at a different stage.
This will be especially true at times of stress! If we remember this, it can be easier to empathise with them and to modify what we expect of them and how we support them. Like all of us, when our children at at their very worst, it is empathy that they need. And empathy is what helps us to feel close and connected to people.
When we are feeling anxious we can lose skills; so the demands might be ahead of what we can actually manage to do. As adults we are able to think about this and do something different until we feel less anxious, but for children with young brains they are more likely to have a tantrum, or refuse to do things or seem like they are being unkind. This can be their way of saying “I can’t manage what is being asked of me”.
“Is this a Can’t or Won’t situation?” is relevant at all ages, but especially in toddlerhood and again at adolescence.