At the level of need for security the child uses different behaviours to see how we respond. That means that the child is interested in finding out how it can effect the world and what the response is. You could say the child is pushing buttons on a computer to see what happens on the screen.
Childhood is all about rules and limitations for acceptable behaviour. From this we learn two things that we bring with us into puberty. First, there are restrictions to how one can behave. Secondly, we must restrain ourselves and behave with moderation. To take things to its extreme is not considered good behaviour. In puberty this becomes internalised and shapes our behaviour.
At the level of need for appreciation we interact with others. The most intense form of interaction would be discussions, since this means sharing our view of the world with others and listen to how others view the world. Very interesting. So at this level itís about presenting your view and listening so that you can learn from this.
At the level of self-realization other peopleís view does not have such a strong effect on you, because at this level itís mainly about what you can offer to your surrounding. You have a fairly good idea about the world. The point is not that you are smarter than anyone else, but rather you make your views available. Whether they are good or bad is up to others to judge. You just present them. So at this level we are interested in contributing to society.
At the level of philosophical insight one is interested in getting a fundamental understanding of what is effecting us and the world. One also focuses on how to evolve further that which we call philosophy. Where is mankind going?
At this level you talk about ideas. Things become extremely simplified and without any detailed knowledge. For example one could say that Chinese culture is based on the idea of leadership. We call it Taoism and Confucianism, but the idea is how to control or lead a people. When such an idea and available knowledge make sense than we have real understanding of why the world looks like it does. The human nature discussed here is based on such reasoning.