Which of the following is an example of evidence showing that non-perceptual processes play a role in perception?
a. Perception of the steepness of a hill increases when the participants are wearing heavy backpacks.
b. A patient with blindsight (D.B.) experiences negative afterimages.
c. Texture gradients influence our perception of depth.
d. Removal of a portion of the right visual cortex results in a scotoma.
Question 2
Which threat occurs in nonequivalent group designs because the groups may have different participant characteristics?
a. history effects
b. instrumentation effects
c. regression toward the mean
d. assignment bias
The role of the liver in fuel supply to the blood.
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