In classical conditioning, it is divided into two categories one being appetitive and the other one being aversive depending on if the unconditioned stimulus is pleasant or unpleasant. Appetitive is known as pleasant and the aversive is known to be unpleasant. In appetitive conditioning, this would be someone who would go out to find something pleasant for their needs. In aversive, this would be something that someone would try to avaid. For example, someone getting burned by a pot then would pull away fast and avoid ever trying to touch a hot pot.