Your child is now truly beginning to understand how relationships work and that other people may feel differently from the way he feels. Your child is assertive about their wishes, and 'no' is still the word you will hear the most. In a nutshell, your child is still pretty much obsessed with the word 'no.'
What you need to know
Your kid can now play with other young children, but it’s best to keep play-dates short and sweet as they often end in tears, usually because someone isn't sharing or because some other kid wants to be in charge of everything. Your child may find it difficult to control their feelings, which often results in a tantrum. They may also find some activities a challenge such as being asked to wait their turn for something, or having to make a choice. They enjoy copying adult behavior and activities, striving very hard for independence. Basically, their development at this age will be extensive and strange sometimes.
Their mind and body are still tender and innocent. They may be interested in engaging with adults or older children, or prefer to spend most of their time playing alone. All children are different and develop at different rates, so don't be overly concerned if your child is acquiring new skills at a different rate to those around them. But if you are worried about their development or it seems to have stalled or to be going backwards, talk to a health professional.