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24 Cards in this Set
- Front
- Back
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What is cohesion?
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an object must always maintian a single bounded contour
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Do OSPB persist through cohesion violations?
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Not fully
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What is a low-level visual feature?
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colors, size, shape
"it's red" |
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What is a higher-level object type?
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object identification
"it's a duck" |
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What is an object file?
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A midlevel visual representation that "sticks" to a moving object over time on the basis of spatiotemporal properties and stores (and updates) information about that object's properties
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What is an object-specific preview benefit?
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Faster to name final letter when its on the same object that it was initially
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What is the object-reviewing paradigm?
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Number of objects shown, letters on two; objects move, then a letter appears on one of the objects, must name that letter
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What are three possible outcomes of splitting a moving object into two?
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1) Obliterate object file's contents
2) Survive the splitting intact, but stay bound to only one of the two objects 3) Be "copied" to both of the two resulting objects |
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How did the trials begin?
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Two circles presented as black outlines on a white background, on which a letter soon appeared
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What is the splitting condition?
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One gradually split into two identical circle, one moving upward and one moving downward
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What is the trajectory-change condition?
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One followed one of the upward or downward paths from the splitting condition
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What was the purpose of the trajectory-change condition?
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A control
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What change did Mitroff et al make from the object-reviewing paradigm?
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Press key to indicate one of two options: target letter was same as a preview letter or it was different
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What is a no-match trial?
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Target letter did not appear in either of the original circles.
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What is a match trial?
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Target letter apears in one of the original circles
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What is a congruent match trial?
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Target letter same as preview letter that initially appeared on that circle
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What is an incongruent match trial?
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Target letter same as preview letter that initially appeared on the OTHER initial circle
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Did the condition affect the accuracy?
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no (means that people do not have a harder time identifying a split)
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What was the displaywide priming effect?
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Responses on no-match trials were significantly slower than responses on either types of match trials
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How was the OSPB defined?
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As the difference between congruent-match and incongruent-match trials
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What OSPBs were most adversely affected by the changes?
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The upward and downward split
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What is the conclusion of this experiment?
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That the maintenance of object files of adult visual cognition is constrained by a principle of cohesion
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What are the two interpertations of results?
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1) Survived splitting, but went with only one of the objects
2) Split in half, strength halved |
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Which interpretation is more likely?
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Split in half, strength halved-- no bimodality in the data
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