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
Image was downloaded from the Jet Propulsion Laboratory web site
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
Opener Alignment comparing DNA sequence for the leptin gene from dogs (top) and humans (bottom)
High in the Andes, a scientist measures the stride of a carnivorous dinosaur