Deferred Interpretations: Why Starting Dickens is Taxing but Reading Dickens Isn't

Comprehenders often need to go beyond conventional word senses to obtain an appropriate interpretation of an expression. We report an experiment examining the processing of standard metonymies (The gentleman read Dickens) and logical metonymies (The gentleman began Dickens), contrasting both to the processing of control expressions with a conventional interpretation (The gentleman met Dickens). Eye movement measures during reading indicated that standard (producer-for-product) metonymies were not more costly to interpret than conventional expressions, but logical metonymies were more costly to interpret than both standard metonymies and conventional expressions. These results indicate that constructing alternative senses is sometimes taxing and that not all types of deferred interpretations are processed in the same way. The results suggest that a critical factor in determining the attendant cost of constructing alternative senses is whether compositional operations must generate unexpressed semantic structure to realize an extended sense of an expression.     

Do speakers avoid ambiguities during dialogue?

What affects speakers' production of ambiguous utterances in dialogue? They might consider ease of production for themselves, or ease of comprehension for their addressees. Previous research has demonstrated that ease of production plays a role in speakers' syntactic choices, but that ease of comprehension does not. However, such studies have not employed dialogues that involve role swapping on a turn-by-turn basis. In our experiment, participants alternated in giving and following instructions to move objects around on a grid. They tended to repeat the syntactic form just used by their interlocutor, reflecting sensitivity to ease of production. More interestingly, they were more likely to disambiguate their utterances when the visual context was potentially ambiguous than when it was not, reflecting sensitivity to ease of comprehension. We conclude that speakers pay attention to their beliefs about their addressees' ease of comprehension, in addition to considering ease of production for themselves.     

Effects of contextual predictability and transitional probability on eye movements during reading

In 2 eye-movement experiments, the authors tested whether transitional probability (the statistical likelihood that a word precedes or follows another word) affects reading times and whether this occurs independently from contextual predictability effects. Experiment 1 showed early effects of predictability, replicating S. A. McDonald and R. C. Shillcock's (2003a) finding that words with a high transitional probability (defeat following accept) are read faster than words with a low transitional probability (losses following accept). However, further analyses suggested that the transitional probability effect was likely due to differences in predictability rather than transitional probability. Experiment 2, using a better controlled set of items, again showed an effect of predictability, but no effect of transitional probability. The authors conclude that effects of transitional probability are part of regular predictability effects. Their data also show that predictability effects are detectable very early in the eye-movement record and between contexts that are weakly constraining.     

The difficulty of coercion: a response to de Almeida

The sentence The secretary began the memo requires specifying what event the secretary began, because the memo does not refer to an event. McElree, Traxler, Pickering, Seely, and Jackendoff (2001) and Traxler, Pickering, and McElree (2002) found evidence from both self-paced reading and eye-tracking that such sentences caused processing difficulty, and thus argued that people "coerced" the object to refer to an event (e.g., writing the memo). de Almeida (2004) reports two self-paced reading experiments that failed to replicate some aspects of previous studies, and thereby argued against coercion during comprehension. A new experiment demonstrates coercion costs using new items, and provides evidence of coercion cost with de Almeida's stimuli. We conclude that coercion does cause processing difficulty.     

Syntactic priming in written production: Evidence for rapid decay

There is strong evidence for syntactic priming in language production (Bock, 1986), but little evidence about the time course of such effects. We report an experiment that examined the circumstances under which syntactic priming decays in written language production. Participants completed sentence fragments that allowed completions with one of two syntactic forms (Pickering & Branigan, 1998). They tended to produce the same syntactic form for immediately consecutive fragments, even though the two fragments described different events. However, when the experimental fragments were separated by other fragments with unrelated syntactic forms, this tendency rapidly diminished. The results suggest that priming effects in written production decay rapidly when other structures are subsequently produced. We discuss the implications for the application of syntactic information during production.     

Processing local and unbounded dependencies: A unified account

This paper proposes an account of incremental sentence processing and the initial stage of syntactic ambiguity resolution, based on the claim that the processor seeks to provide semantic interpretations for sentence fragments as soon as it possibly can. In this model, there is no fundamental distinction between local and unbounded dependencies. The processor employs a version of categorial grammar based on dependency grammar, in which dependency constituents are derived from dependencies between words and are permitted to overlap. The processor seeks to form dependency constituents as soon as it can, and to give interpretations to these fragments immediately. The initial stage of ambiguity resolution is determined by theprinciple of dependency formation, under which the processor automatically chooses an analysis that allows a single dependency constituent to be formed in preference to one that does not. The motivation is semantic: Such an analysis maximizes the amount of incremental interpretation that is possible. But if more than one analysis is compatible with the formation of a single constituent, the processor can appeal to a range of sources of nonsyntactic information in making its choice. I show how this account can capture a range of psycholinguistic evidence without positing any fundamental distinction between local and unbounded dependencies.     

Processing syntactically ambiguous sentences: Evidence from semantic priming

In this paper, we report the results of a study which investigates the processing of syntactically ambiguous sentences. We examined the processing of sentences in which an embedded clause is interpretable as either a complement clause or as a relative clause, as in, for example,The receptionist informed the doctor that the journalist had phoned about the events. The embedded clause in such sentences is typically analyzed as a complement to the verbinformed, rather than as a relative clause modifyingthe doctor. A number of models parsing predict this is the only analysis ever considered, while others predict that both interpretations are computed in parallel. Using a cross-model semantic priming technique, we probed for activation ofdoctor just after the embedded verb. Since only the relative clause analysis contains a connection betweenthe doctor and the embedded verb, we expected reactivation ofdoctor at that point only if the relative clause analysis were a viable option. Our results suggest that this is the case: Compared to priming in an ambiguous control sentence, a significant reactivation effect was obtained. These results are argued to support a model of parsing in which attachment of a clause may be delayed.The research reported here was supported in part by a grant from the McDonnell-Pew Cognitive Neurosciences Program, in part by grant DC-01409 (a research and training grant funded by the National Institute on Deafness and Other Communicative Disorders), and in part by a SERC postdoctoral fellowship B/90/ITF/293. We are grateful to Andrew Barss, Paul Bloom, Merrill Garrett, David Swinney, and an anonymous reviewer for comments on an earlier draft of this paper, and to Paul Gorrell for extremely useful discussion of parsing issues. We thank Suzanne Delaney for giving voice to our stimulus sentences. The results of this study were presented at the Fifth Annual CUNY Sentence Processing Conference, New York, March 1992.Order of authors is alphabetical.     

Reading time evidence for enriched composition

Verbs like 'begin' and 'enjoy' appear to semantically select a complement that expresses an activity or an event (Jackendoff, R. (1997). The architecture of the language faculty. Cambridge, MA: MIT Press; Pustejovsky, J. Cognition 41 (1991) 47; Pustejovsky, J. (1995). The generative lexicon. Cambridge, MA: MIT Press). When these verbs occur with a complement that does not directly denote either an activity or an event (e.g. '... began the book' or '... enjoyed the book'), the complement must be type-shifted from an object to an activity to conform to the verb's semantic restrictions. We report an experiment in which self-paced reading times were found to be longer for complements that required type-shifting than for complements that directly matched the semantic restrictions of the matrix verb. This finding is argued to provide on-line evidence for a type of enriched lexical processing posited in recent lexical semantic research.     

Two strategies to increase adherence to HIV antiretroviral medication: life-steps and medication monitoring

Advances in the medical treatment of HIV have made it clear that adherence to highly active antiretroviral treatment is a crucial feature for treatment success. The present paper had two goals: (1) to examine psychosocial predictors of adherence in persons receiving HIV antiretroviral therapy; (2) to compared two minimal-treatment interventions to increase HIV medication adherence in a subset of persons who self-reported less than perfect adherence. One of the interventions, Life-Steps, is a single-session intervention utilizing cognitive-behavioral, motivational interviewing, and problem-solving techniques. The other intervention, self-monitoring, utilizes a pill-diary and an adherence questionnaire alone. Significant correlates of adherence included depression, social support, adherence self-efficacy, and punishment beliefs about HIV. Depression was a significant unique predictor of adherence over and above the other variables. Both interventions yielded improvement in adherence from baseline, and the Life-Steps intervention showed faster improvements in adherence for persons with extant adherence problems.