The correct answer to this open question is the following.
Another one of Bill’s ideas for the toy company is a board game called Planet Wars. The goal is to conquer as many planets as possible by forming strategies for attack and defense and logically anticipating other players’ moves. This game is most appropriate for children in the formal operational stage of cognitive development.
In psychological terms, the formal operational stage of cognitive development starts when children are 12 years old. They begin to have abstract ideas in their minds, it is the beginning of creative thinking, they use imagination to think about some activities, and they are more capable to do basic calulations. This period of adolescence ends in the first stages of adulthood.
