Perky's experiment, in which participants were asked to project visual images of common objects onto a screen, showed that
a. imagery and perception are two different phenomena.
b. imagery and perception can interact with one another.
c. there are large individual differences in people's ability to create visual images.
d. creating a visual image can interfere with a perceptual judgment task.
Question 2
Perky's imagery study (1910) had participants describe images of objects that were dimly projected onto a screen. The significance of Perky's results was that
a. screen images interfered with people's ability to form mental images.
b. people were influenced by the projected images when forming their mental images, even when they were unaware that the projected images were present.
c. the screen images had no effect on people's mental images.
d. people used the screen images to create their mental images but only when the objects were unfamiliar.
The experiment of Plaxton and his colleagues demonstrated that plants can alter their metabolism in
The Meselson-Stahl Experiment
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