lec02-2 - Word Superiority Effect & Evidence for...

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Word Superiority Effect & Evidence for Feature Representations in Perception Psychology 355: Cognitive Psychology Winter Quarter 2009 1/13/2009
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P 355, Miyamoto, Winter '09 2 Outline • Word Superiority Effect – Evidence for Top Down Processing • Evidence for Feature Representations in Perception o Neisser Search Experiments o Treisman’s Feature Integration Theory, and the Explanation of Illusory Conjunctions Next: Word Superiority Effect Definition
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P 355, Miyamoto, Winter '09 3 Word Superiority Effect • People are faster to recognize a letter in the context of a word, e.g., “K” in the context of “FORK,” then in isolation “K” when presented alone. • Word superiority effect is an example of several things: o The importance of top-down processing of context in letter recognition (bottom-up processing is also important, but this is taken as obvious). o An important approach to modeling cognitive processes called “connectionist modeling” or “parallel, distributed processing models.” Next: Table Illustrating Superiority of Word to Single Letter
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P 355, Miyamoto, Winter '09 4 Word Superiority Effect • Letter recognition is faster in the context of a word. Finding is the same at all letter positions in a word. • The word context (FOR_) is consistent with both “T” and “K”. slower K FLRK slower T FLRT faster K FORK faster T FORT slower K K slower T T Finding Correct Response Stimulus Task: Type "T" if you see the letter T; type "K" if you see the letter K Next:Graphic Showing Stimulus STructure to Produce WSP
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P 355, Miyamoto, Winter '09 5 Diagram Showing Stimulus in Word Superiority Effect Next: Return to Table Illustrating Superiority of Word to Single Letter
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P 355, Miyamoto, Winter '09 6 Word Superiority Effect • Letter recognition is faster in the context of a word. Finding is the same at all letter positions in a word. • The word context (FOR_) is consistent with both “T” and “K”. slower K FLRK slower T FLRT faster K FORK faster T FORT slower K K slower T T Finding Correct Response Stimulus Task: Type "T" if you see the letter T; type "K" if you see the letter K Next: Interactive Activation Model for the Word Superiority Effect
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P 355, Miyamoto, Winter '09 7 Interactive Activation Model: Diagram shows how the word FORK activates the components of the interactive activation model.
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lec02-2 - Word Superiority Effect & Evidence for...

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