1. When Christopher entered his friend’s house, he noticed a dog dish beside the door. He soon began experiencing symptoms of asthma and assumed that the house was filled with dog dander (particles of fur or skin), to which he is allergic. Only later did he discover that his friend’s children had placed the dish by the door in anticipation of soon owning a dog. In fact, no dog had yet been in the house. Assuming that Christopher’s reaction is an example of higher-order conditioning, diagram the conditioning process that resulted in Christopher’s allergic reaction. Label each component using the appropriate abbreviations.