Hoang Vu - Academia.edu (original) (raw)
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Papers by Hoang Vu
Encyclopedia of the Human Brain, 2002
Memory & Cognition, 2000
According to the reordered access model (see, e.g.the meanings ofan ambiguous word are exhaustive... more According to the reordered access model (see, e.g.the meanings ofan ambiguous word are exhaustively accessed.? Ifa homonym is balanced (i.e., has equally used meanings), its meanings are simultaneously (equally) accessed; and if the ambiguous word is polarized (i.e., has one frequently used meaning), the meanings are accessed in order of frequency, with the most frequent (dominant) meaning being accessed first, followed by access of the least frequent (subordinate) meaning(s). Prior context can reorder the availability of a specific meaning by boosting its activation level, provided that the context biases that meaning. An important finding that has been consistently demonstrated in research supporting the reordered access model is that when a polarized ambiguous word is preceded by a subordinate biased context, reading time is longer for an ambiguous word than for an unambiguous control word. The longer processing time is assumed to reflect the simultaneous and equal access ofthe dominant (due to meaning frequency) and subordinate (due to context) meanings. However, regardless ofthe specifications of context and meaning frequency, the reordered access model includes the fundamental premise that all meanings of an ambiguous word are initially accessed in all contexts.
Memory & Cognition - MEM COGNITION, 1998
Results from a series of naming experiments demonstrated that major lexical categories of simple ... more Results from a series of naming experiments demonstrated that major lexical categories of simple sentences can provide sources of constraint on the interpretation of ambiguous words (homonyms). Manipulation of verb (Experiment 1) or subject noun (Experiment 2) specificity produced contexts that were empirically rated as being strongly biased or ambiguous. Priming was demonstrated for target words related to both senses of a homonym following ambiguous sentences, but only contextually appropriate target words were primed following strongly biased dominant or subordinate sentences. Experiment 3 showed an increase in the magnitude of priming when multiple constraints on activation converged. Experiments 4 and 5 eliminated combinatorial intralexical priming as an alternative explanation. Instead, it was demonstrated that each constraint was influential only insofar as it contributed to the overall semantic representation of the sentence. When the multiple sources of constraint were retained but the sentence-level representation was changed (Experiment 4) or eliminated (Experiment 5), the results of Experiments 1, 2, and 3 and were not replicated. Experiment 6 examined the issue of homonym exposure duration by using an 80-msec stimulus onset asynchrony. The results replicated the previous experiments. The overall evidence indicates that a sentence context can be made strongly and immediately constraining by the inclusion of specific fillers for salient lexical categories. The results are discussed within a constraint-based, context-sensitive model of lexical ambiguity resolution.
Encyclopedia of the Human Brain, 2002
Memory & Cognition, 2000
According to the reordered access model (see, e.g.the meanings ofan ambiguous word are exhaustive... more According to the reordered access model (see, e.g.the meanings ofan ambiguous word are exhaustively accessed.? Ifa homonym is balanced (i.e., has equally used meanings), its meanings are simultaneously (equally) accessed; and if the ambiguous word is polarized (i.e., has one frequently used meaning), the meanings are accessed in order of frequency, with the most frequent (dominant) meaning being accessed first, followed by access of the least frequent (subordinate) meaning(s). Prior context can reorder the availability of a specific meaning by boosting its activation level, provided that the context biases that meaning. An important finding that has been consistently demonstrated in research supporting the reordered access model is that when a polarized ambiguous word is preceded by a subordinate biased context, reading time is longer for an ambiguous word than for an unambiguous control word. The longer processing time is assumed to reflect the simultaneous and equal access ofthe dominant (due to meaning frequency) and subordinate (due to context) meanings. However, regardless ofthe specifications of context and meaning frequency, the reordered access model includes the fundamental premise that all meanings of an ambiguous word are initially accessed in all contexts.
Memory & Cognition - MEM COGNITION, 1998
Results from a series of naming experiments demonstrated that major lexical categories of simple ... more Results from a series of naming experiments demonstrated that major lexical categories of simple sentences can provide sources of constraint on the interpretation of ambiguous words (homonyms). Manipulation of verb (Experiment 1) or subject noun (Experiment 2) specificity produced contexts that were empirically rated as being strongly biased or ambiguous. Priming was demonstrated for target words related to both senses of a homonym following ambiguous sentences, but only contextually appropriate target words were primed following strongly biased dominant or subordinate sentences. Experiment 3 showed an increase in the magnitude of priming when multiple constraints on activation converged. Experiments 4 and 5 eliminated combinatorial intralexical priming as an alternative explanation. Instead, it was demonstrated that each constraint was influential only insofar as it contributed to the overall semantic representation of the sentence. When the multiple sources of constraint were retained but the sentence-level representation was changed (Experiment 4) or eliminated (Experiment 5), the results of Experiments 1, 2, and 3 and were not replicated. Experiment 6 examined the issue of homonym exposure duration by using an 80-msec stimulus onset asynchrony. The results replicated the previous experiments. The overall evidence indicates that a sentence context can be made strongly and immediately constraining by the inclusion of specific fillers for salient lexical categories. The results are discussed within a constraint-based, context-sensitive model of lexical ambiguity resolution.