A scientist rings a bell just prior to presenting meat to the dogs in his laboratory. After
several pairings, the dogs begin salivating when the bell is rung, even when no meat is
presented. In this study, the bell is the ______.
a. unconditioned stimulus c. conditioned stimulus
b. unconditioned response d. conditioned response
Question 2
A scientist rings a bell just prior to presenting meat to the dogs in his laboratory. After
several pairings, the dogs begin salivating when the bell is rung, even when no meat is
presented. In this study, the meat is the ______.
a. unconditioned stimulus c. conditioned stimulus
b. unconditioned response d. conditioned response
Brain cells of a laboratory mouse are shown glowing with multicolor fluorescent proteins
Galaxies with Rings
James A. Garfield lies mortally wounded. After failing to locate the bullet, surgeons called in Alex
Topographical maps of the brain of dogs
Laboratory-Produced Protocells