Piaget suggests that most children enter the final stage of cognitive development around 12 years of age. It is at this time where they begin to develop prepositional reasoning. Prepositional reasoning describes a child’s ability to reason about two or more related assertions and understand that words or statements can have a number of different meanings depending on the context it is used. A child at this stage would most likely appreciate a pun whereas a child who hadn’t reach this stage of cognitive development would not.