Rachel’s dog loves meat and salivates when he sees it. Rache…

Rachel’s dog loves meat and salivates when he sees it. Rachel repeatedly shows her dog a picture of a circle before showing him a piece of meat. Soon, the dog salivates to the picture of the circle. When Rachel shows her dog a picture of an oval, the dog does not salivate, which is best explained by

Professor Sanma is doing research on fish.  He refuses to le…

Professor Sanma is doing research on fish.  He refuses to learn his students’ names because he believes the names will take up space in his long-term memory that could be better used for fish-related information. Professor Sanma’s belief about his memory is INCORRECT because

Ashley lives in a neighborhood with many squirrels. The squi…

Ashley lives in a neighborhood with many squirrels. The squirrels in her neighborhood are very afraid of her cat, and often bark warnings to each other when they see her cat coming.  When Ashley comes home from work, she removes her house keys from her purse, jingling them as she opens the door.  When Ashley jingles her keys, her cat comes running, and they enter the house together.  After a week or so of this, when Ashley jingles her keys to enter her house, all of the squirrels in her neighborhood start barking.  In this case, what is the conditioned stimulus (CS)?