Answer:
Heavily influenced by training, context and cultural conditions.
Step-by-step explanation:
Jean Piaget developed a theory that explained the cognitive development of children and the different stages they go through as they grow older. According to Piaget, this development follows a steady path and it leads from one stage to the next one in children considered "normal" and the children construct his knowledge thanks to their interaction with the world by manipulating and exploring it.
However, some investigators have concluded that these different stages don't appear spontaneously but are influenced by training, context and cultural conditions. This means that the adults play an important role in the children development and they are the ones who provide children of the necessary conditions to go through the different cognition stages.