Early research on classical conditioning was performed with dogs. In certain variations of this research, experimenters repeatedly presented dogs with meat powder just after ringing a bell. The dogs (who would naturally salivate after being exposed to meat powder) learned to associate the bell with the meat powder, and began to salivate as soon as they heard the bell. In this research, the bell
served as a(n) ____.
a. unconditioned stimulus that became a conditioned stimulus
b. conditioned stimulus that became an unconditioned stimulus
c. neutral stimulus that became a conditioned stimulus
d. unconditioned stimulus that became a neutral stimulus
C
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Dionne is playing in her playpen and reaches to pull back a blanket that is partially covering the teddy bear she wants. What would Jean Piaget say this is an example of?
A. secondary circular reactions B. first habits and primary circular reactions C. coordination of secondary circular reactions D. tertiary circular reactions
The t distribution for df = 4 is flatter and more spread out than the t distribution for df = 20
Indicate whether the statement is true or false
Which of the following is true of glial cells?
a. they have direct contact with the outside world b. they carry messages from the brain to muscles to produce behaviors c. they remove wastes from the central nervous system d. they carry information toward the spinal cord and brain
Which of the following cognitive symptoms is someone with amnesia most likely to experience?
A. not knowing the day, month, and year B. not knowing how to drive a car C. having delusions of grandiosity D. feeling intense paranoia