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Verb semantic category and argument structure frequency biases in syntactic ambiguity resolution

 Vered Argaman and Neal J. Pearlmutter
  
 

Abstract:
Frequency effects of linguistic elements have long been recognized in language comprehension, with more frequent elements typically being processed more quickly or easily than less frequent ones (e.g., Just & Carpenter, 1980). Constraint-based sentence comprehension theories make extensive use of argument structure frequency information in explaining ambiguity resolution (e.g., MacDonald et al., 1994). For example, Garnsey et al. (1997) studied the sentential complement/direct object (SC/DO) ambiguity and showed that readers had no difficulty at disambiguation in sentences with SC-biased verbs, but read slower at disambiguation in sentences with DO-biased verbs (compared to unambiguous controls).
Argaman et al. (1998) applied work in lexical semantic theories (e.g., Pinker, 1989) to suggest that such theories could also account for frequency biases. Looking at argument structure frequency measures for SC-taking verbs and corresponding nouns (e.g., propose-proposal), derived from both corpus and completion data sources, they found: (1) overall reliable correlations across verb-noun pairs; (2) reliable differences in frequency bias measures between semantic categories identified by Levin (1993); (3) correlations across verb-noun pairs within Levin's semantic categories; and (4) no reliable influence of derivational morphology or amount of noun-verb orthographic overlap on argument structure properties. These results implicate semantics as a source for argument structure biases, and the purpose of the current investigation was to examine how well semantic category and finer-grained semantic properties predict variation in comprehension difficulty in an on-line ambiguity resolution study.
Participants read 36 sentences containing an SC/DO ambiguity or an unambiguous control in a word-by-word self-paced reading paradigm. Twelve verbs in each of three semantic categories, chosen to cover different ranges of SC bias, were used to trigger the ambiguity: manner of speaking (low SC bias; e.g., barked, whispered), transfer of message (medium bias; e.g., demonstrated, showed), and say verbs (high SC bias; e.g., claimed, declared). The stimuli were always resolved as SCs but were mixed with DO-resolved fillers and other structural types. A reliable ambiguity effect was present for each verb type at disambiguation, but the magnitude of the effects did not differ across verb type, providing preliminary evidence that semantic category itself does not have a substantial influence on ambiguity resolution. The influence of finer-grained semantic properties is being investigated by examining correlations between individual verb SC biases and on-line performance. These results will be discussed in terms of the relationship between broad lexical-semantic categories and finer-grained semantics, and with respect to current theories of sentence comprehension.

References
Argaman, V., Pearlmutter, N. J., Garnsey, S. M., Mendelsohn, A. A., Randall, J. H., & Myers, E. (1998). "Lexical semantics as a basis for argument structure frequency biases." Poster presented at the 1998 meeting of the Psychonomic Society, Dallas, TX.
Garnsey, S. M., Pearlmutter, N. J., Myers, E., & Lotocky, M. A. (1997). The contributions of verb bias and plausibility to the comprehension of temporarily ambiguous sentences. Journal of Memory and Language, 37, 58-93.
Just, M. A., & Carpenter, P. A. (1980). A theory of reading: From eye fixations to comprehension. Psychological Review, 87, 329-354.
Levin, B. (1993). English Verb Classes and Alternations: A Preliminary Investigation. Chicago, IL: University of Chicago Press.
MacDonald, M. C., Pearlmutter, N. J., & Seidenberg, M. S. (1994). The lexical nature of syntactic ambiguity resolution. Psychological Review, 101, 676-703.
Pinker, S. (1989). Learnability and Cognition Cambridge, MA: MIT Press.

 
 


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