Syntactic Ambiguity Resolution Research Articles

What prosody does when morphosyntax is absent: The case of Korean relative clauses

This study investigates the role of prosodic information in linguistic interpretation in the absence of an explicit linguistic marker to resolve ambiguity. We particularly focus on the impact of prosody on comprehension of restrictive relative clauses (RRC) and non-restrictive relative clauses (NRC) in Korean, a language that lacks morphosyntactic or orthographic markers that distinguish between RRC and NRC. We hypothesize that narrow focus prosody may be associated with RRC, while broad focus prosody with NRC, which we test in two experiments through a picture selection task (Experiment 1) and an audio selection task (Experiment 2). Results showed that Korean listeners associated narrow focus prosody more often with RRC-biased pictures than NRC-biased pictures, suggesting that prosodic information has an impact on the resolution of syntactic ambiguity in the absence of any explicit linguistic marker. Further investigation suggests that there is variation in the impact of prosody across individuals and their sensitivity to prosody seems to be affected differently depending on the type of task.

Linking cognitive control to language comprehension: proportion congruency effects in syntactic ambiguity resolution

ABSTRACT Two experiments investigated the effect of sustained cognitive control engagement on syntactic ambiguity resolution. Participants heard (Experiment 1) or read (Experiment 2) garden path sentences like “Put the kiwi on the rectangle on the circle”, in which “on the rectangle” could temporarily reflect either a destination of “Put” or modifier of “kiwi”, and they viewed visual arrays with a kiwi on a rectangle and an empty rectangle and circle. Cognitive control was manipulated experimentally by interleaving sentence trials among either mostly incongruent or mostly congruent Stroop trials. Across both experiments, garden path mouse cursor movements to incorrect destinations were reduced when sentence trials were interleaved among mostly incongruent Stroop trials, and in Experiment 2, garden path reading time effects were also reduced in this condition. These results suggest that a high proportion of incongruent trials supports the sustained engagement of cognitive control and causally improves sentence comprehension across (i.e. spoken and written) modalities.

Production and Comprehension of Prosodic Boundary Marking in Persons With Unilateral Brain Lesions.

Persons with unilateral brain damage in the right hemisphere (RH) or left hemisphere (LH) show limitations in processing linguistic prosody, with yet inconclusive results on their ability to process prosodically marked structural boundaries for syntactic ambiguity resolution. We aimed at systematically investigating production and comprehension of three prosodic cues (f 0 range, final lengthening, and pause) at structural boundaries in coordinate sequences in participants with right hemisphere brain damage (RHDP) and participants with left hemisphere brain damage (LHDP). Twenty RHDP and 15 LHDP participated in our study. Comprehension experiment: Participants and a control group listened to coordinate name sequences with internal grouping by a prosodically marked structural boundary (grouped condition, e.g., "(Gabi und Leni) # und Nina") or without internal grouping (ungrouped condition, e.g., "Gabi und Leni und Nina") and had to identify the target condition. The strength and combinations of prosodic cues in the stimuli were manipulated. Production experiment: Participants were asked to produce coordinate sequences in the two conditions (grouped, ungrouped) in two different tasks: a Reading Aloud and a Repetition experiment. Accuracy of participants' productions was subsequently assessed in a rating study and productions were analyzed with respect to use of prosodic cues. In the Comprehension experiment, RHDP and LHDP had overall lower identification accuracies than unimpaired control participants and LHDP were found to have particular problems with boundary identification when the pause cue was reduced. In production, LHDP and RHDP employed all three prosodic cues for boundary marking, but struggled to clearly mark prosodic boundaries in 28% of all productions. Both groups showed better performance in reading aloud than in repetition. LHDP relied more on using f 0 range and pause duration to prosodically mark structural boundaries, whereas RHDP employed final lengthening more vigorously than LHDP in reading aloud. We conclude that processing of linguistic prosody is affected in RHDP and LHDP, but not completely impaired. Therefore, prosody can serve as a relevant communicative resource. However, it should also be considered as a target area for assessment and treatment in both groups. https://doi.org/10.23641/asha.21637505.

Prosodic cue weighting in the processing of ambiguous sentences by native English listeners and Korean listeners of English.

Differences in the perception of segmental contrasts by native and non-native listeners have been analyzed as the results of language-specific weightings of acoustic cues in their perception grammar [e.g., Escudero and Boersma, Stud. Second Lang. Acquis. 26, 551-585 (2004)]. However, less attention has been paid to the weighting of prosodic cues. This study investigated the relative importance of four prosodic cues-word duration, pauses, pitch, and intensity-in the resolution of English syntactic ambiguity by native English listeners and Korean learners of English. In a forced-choice processing task, English listeners' disambiguation relied most heavily on pitch, followed by pause and intensity cues, whereas pauses were the only heavily weighted cue for Korean listeners, indicating an influence from their native language. Moreover, Korean listeners' use of prosody for disambiguation was found to be influenced by their age of English acquisition and English proficiency.

Vocabulary knowledge predicts individual differences in the integration of visual and linguistic constraints

ABSTRACT Two experiments investigated individual differences in the integration of visual and linguistic constraints during syntactic ambiguity resolution. Skilled adult comprehenders heard sentences like “Put the kiwi on the rectangle on the circle”, in which “on the rectangle … ” could temporarily reflect either the destination of “put” or a modifier of “kiwi”, while viewing visual arrays with either 1 kiwi (e.g. on a rectangle) or 2 kiwis (e.g. on a rectangle vs. triangle). While the noun “kiwi” provided sufficient information to distinguish the object of interest in the 1 referent context, modification was necessitated by the 2 referent context. Garden path eye (Experiment 1) and mouse (Experiment 2) movements to the incorrect (e.g. rectangle) destination were reduced in 2 vs 1 referent contexts, conceptually replicating prior findings, and these effects were weaker for participants with less vs. more vocabulary knowledge. Implications for models of sentence processing are discussed.

Prosodic Disambiguation in First and Second Language Production: English and Korean.

This study investigates the use of prosodic cues for syntactic ambiguity resolution by first language (L1) and second language (L2) speakers. In a production experiment, sentences with relative clause attachment ambiguity were elicited in three language conditions: native English speakers' L1 productions as well as Korean-English bilingual speakers' L1 Korean and L2 English productions. The results show that English uses both boundary marking (pause) and relative word prominence (elevated pitch and intensity) for disambiguation, while Korean mainly relies on boundary marking (pre-boundary lengthening and pause). The bilingual speakers have learned to use the English phonological categories such as pitch accents for disambiguation, but their use of phonetic cues to realize these categories still differed from that of native English speakers. In addition, they did not show a significant use of boundary cues. These results are discussed in relation to the typological differences between the prosody of English and of Korean.

L1 and L2 Syntactic Ambiguity Resolution of Relative Clauses

Syntactic ambiguity resolution is a cognitive mechanism that interacts with a range of linguistic skills vital to comprehension. Research in this area has, for most of the time, involved European languages. Meanwhile, there is scant literature on a vast range of languages that possess distinct typological features that may hold an important role in unique and underexplored syntactic processes. Basing upon the Garden-Path Model, this study identifies attachment preference in two less explored languages, Tagalog and Kinaray-a, and in L2 English through relative clause parsing experiments. This also attempts to determine whether adjectival modification of noun phrases has a relationship with attachment preference scores. Chi-square tests of independence were conducted on experimental data and revealed a minimal relationship between select types of relative clauses according to adjectival modification and attachment preference. Data show contrasting patterns between Tagalog and Kinaray-a groups, where the former marginally lean towards low attachment (N2) and the latter towards high attachment (N1). Similar to Kinaray-a L2 English attachment preference takes the N1 path, a contradiction to past findings on L1 English.

Bilinguals on the garden-path: Individual differences in syntactic ambiguity resolution.

Syntactic parsing plays a central role in the interpretation of sentences, but it is unclear to what extent non-native speakers can deploy native-like grammatical knowledge during online comprehension. The current eye-tracking study investigated how Chinese-English bilinguals and native English speakers respond to syntactic category and subcategorization information while reading sentences with OBJECT-SUBJECT ambiguities. We also obtained measures of English language experience, working memory capacity, and executive function to determine how these cognitive variables influence online parsing. During reading, monolinguals and bilinguals showed similar GARDEN-PATH EFFECTS related to syntactic reanalysis, but native English speakers responded more robustly to VERB SUBCATEGORIZATION cues. Readers with greater language experience and executive function showed increased sensitivity to verb subcategorization cues, but parsing was not influenced by working memory capacity. These results are consistent with exposure-based accounts of bilingual sentence processing, and they support a link between syntactic processing and domain-general cognitive control.

Referential Context and Prosodic Phrasing in the Resolution of L2 Syntactic Ambiguity

Referential Context and Prosodic Phrasing in the Resolution of L2 Syntactic Ambiguity

Referential context and executive functioning influence children's resolution of syntactic ambiguity.

Classic studies reveal two striking differences between preschoolers and adults in online sentence comprehension. Adults (a) recruit referential context cues to guide syntactic parsing, interpreting an ambiguous phrase as a modifier if a modifier is needed to single out the intended referent among multiple options, and (b) use late-arriving information to recover from misinterpretation. Five-year-olds fail on both counts, appearing insensitive to the referential context and often failing to recover from parsing errors (Trueswell, Sekerina, Hill, & Logrip, 1999). But other findings suggest that 5-year-olds show delayed rather than absent sensitivity to the referential context, and that individual differences in executive functioning predict children's ability to recover from garden-path errors. In 2 experiments, we built on these findings, focusing on whether children recruit referential-context cues if given time to do so. Children heard temporarily ambiguous instructions (e.g., Put the frog on the pond into the tent), while we monitored their eye-gaze and actions. We used a slow speech rate, and manipulated referential context between rather than within subjects, to give children time to bring referential context cues into play. Across experiments, eye-movement and action analyses revealed emerging sensitivity to the referential context. Moreover, error rates and eye-movement patterns indicating failures to revise were predicted by individual differences in executive function (scores in Simon Says and Flanker tasks). These data suggest that children, like adults, use referential context information in syntactic processing under some circumstances; the findings are also consistent with a role for domain-general executive function in resolution of syntactic ambiguity. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Priming syntactic ambiguity resolution in children and adults

ABSTRACT Adults use their recent experience to disambiguate ambiguous sentences: Structures that have recently been primed are favoured in the resolution of different types of ambiguity, an example of structural priming. Research on children's use of recent information for disambiguation is scarce. Using a forced-choice task with a tablet, we asked whether 5–6-year-old French-speaking children could also be primed in the resolution of attachment ambiguities, as well as whether listeners are affected by the proportion of primes of each structure, and whether priming is cumulative. We found that both children and adults can be primed, and are sensitive to the proportion of structures in the input, and that priming effects cumulate as the experiment progresses. This is the first study showing priming of ambiguous sentences at 5–6 years, suggesting that children, like adults, use recent experience as a source of disambiguating information.

An Extra Cue Is Beneficial for Native Speakers but Can Be Disruptive for Second Language Learners: Integration of Prosody and Visual Context in Syntactic Ambiguity Resolution.

It has long been debated whether non-native speakers can process sentences in the same way as native speakers do or they suffer from certain qualitative deficit in their ability of language comprehension. The current study examined the influence of prosodic and visual information in processing sentences with a temporarily ambiguous prepositional phrase (“Put the cake on the plate in the basket”) with native English speakers and Japanese learners of English. Specifically, we investigated (1) whether native speakers assign different pragmatic functions to the same prosodic cues used in different contexts and (2) whether L2 learners can reach the correct analysis by integrating prosodic cues with syntax with reference to the visually presented contextual information. The results from native speakers showed that contrastive accents helped to resolve the referential ambiguity when a contrastive pair was present in visual scenes. However, without a contrastive pair in the visual scene, native speakers were slower to reach the correct analysis with the contrastive accent, which supports the view that the pragmatic function of intonation categories are highly context dependent. The results from L2 learners showed that visually presented context alone helped L2 learners to reach the correct analysis. However, L2 learners were unable to assign contrastive meaning to the prosodic cues when there were two potential referents in the visual scene. The results suggest that L2 learners are not capable of integrating multiple sources of information in an interactive manner during real-time language comprehension.

Supplemental Material for Referential Context and Executive Functioning Influence Children’s Resolution of Syntactic Ambiguity

Supplemental Material for Referential Context and Executive Functioning Influence Children’s Resolution of Syntactic Ambiguity

Maze Made Easy: Better and easier measurement of incremental processing difficulty

Abstract Behavioral measures of incremental language comprehension difficulty form a crucial part of the empirical basis of psycholinguistics. The two most common methods for obtaining these measures have significant limitations: eye tracking studies are resource-intensive, and self-paced reading can yield noisy data with poor localization. These limitations are even more severe for web-based crowdsourcing studies, where eye tracking is infeasible and self-paced reading is vulnerable to inattentive participants. Here we make a case for broader adoption of the Maze task, involving sequential forced choice between each successive word in a sentence and a contextually inappropriate distractor. We leverage natural language processing technology to automate the most researcher-laborious part of Maze – generating distractor materials – and show that the resulting A(uto)-Maze method has dramatically superior statistical power and localization for well-established syntactic ambiguity resolution phenomena. We make our code freely available online for widespread adoption of A-maze by the psycholinguistics community.

The Prosody-semantic Interface in the Resolution of L2 Syntactic Ambiguity

The Prosody-semantic Interface in the Resolution of L2 Syntactic Ambiguity

Rhythmic parsing

AbstractA controlled reading experiment reveals that stress-based linguistic rhythm impinges on syntactic ambiguity resolution in silent and oral reading. The results suggest that, at points of syntactic underspecification, the accruing prosodic representation may affect even the earliest stages of structure building, viz. the analysis of syntactic features of an ambiguous word. Such an effect remains inexplicable in the context of (psycho-)linguistic theories that assume a strictly unidirectional relationship between syntactic and phonological processes, the latter merely interpreting the conditions the syntactic component imposes on it. Here, a performance compatible grammar in the framework of Optimal Parsing is presented that is capable of capturing the reading data. The model integrates syntactic parsing and prosodification in reading and predicts that, at points of syntactic indetermination, weak prosodic constraints alone may guide syntactic structure assignment. This suggests a bidirectional relationship between syntax and phonology in grammar and processing while, at the same time, confirming a tight coupling of language production and comprehension.

Syntactic ambiguity resolution in dyslexia: An examination of cognitive factors underlying eye movement differences and comprehension failures.

This study examined eye movements and comprehension of temporary syntactic ambiguities in individuals with dyslexia, as few studies have focused on sentence-level comprehension in dyslexia. We tested 50 participants with dyslexia and 50 typically developing controls, in order to investigate (a) whether dyslexics have difficulty revising temporary syntactic misinterpretations and (b) underlying cognitive factors (i.e., working memory and processing speed) associated with eye movement differences and comprehension failures. In the sentence comprehension task, participants read subordinate-main structures that were either ambiguous or unambiguous, and we also manipulated the type of verb contained in the subordinate clause (i.e., reflexive or optionally transitive). Results showed a main effect of group on comprehension, in which individuals with dyslexia showed poorer comprehension than typically developing readers. In addition, participants with dyslexia showed longer total reading times on the disambiguating region of syntactically ambiguous sentences. With respect to cognitive factors, working memory was more associated with group differences than was processing speed. Conclusions focus on sentence-level syntactic processing issues in dyslexia (a previously under-researched area) and the relationship between online and offline measures of syntactic ambiguity resolution.

The Role of L1 and Degrees of L2 Exposure on Syntactic Ambiguity Resolution in L2 Processing

The Role of L1 and Degrees of L2 Exposure on Syntactic Ambiguity Resolution in L2 Processing

Retrieval cues and syntactic ambiguity resolution: speed-accuracy tradeoff evidence

ABSTRACTLanguage comprehension involves coping with ambiguity and recovering from misanalysis. Syntactic ambiguity resolution is associated with increased reading times, a classic finding that has shaped theories of sentence processing. However, reaction times conflate the time it takes a process to complete with the quality of the behavior-related information available to the system. We therefore used the speed-accuracy tradeoff procedure (SAT) to derive orthogonal estimates of processing time and interpretation accuracy, and tested whether stronger retrieval cues (via semantic relatedness: neighed->horse vs. fell->horse) aid interpretation during recovery. On average, ambiguous sentences took 250ms longer (SAT rate) to interpret than unambiguous controls, demonstrating veridical differences in processing time. Retrieval cues more strongly related to the true subject always increased accuracy, regardless of ambiguity. These findings are consistent with a language processing architecture where cue-driven operations give rise to interpretation, and wherein diagnostic cues aid retrieval, regardless of parsing difficulty or structural uncertainty.

Syntactic Ambiguity Resolution of Cantonese-English Bilinguals: Evidence from Prepositional Phrase and Adverb

Syntactic ambiguity resolution is influenced by multiple constraints. A sentence-picture matching task tested the attachment of prepositional phrase (PP) such as on the chair within an utterance like Mary ate the apple on the chair. PP attaching to NP2 (the apple) is called low attachment (LA), while PP attaching to V (ate) is called high attachment (HA). A comprehension task tested the attachment of adverb such as quickly within an utterance like the story Mary was reading quickly put her little sister into sleep. The checked adverbs attaching to the verb of the embedded clause (VEC) and to the verb of the main clause (VMC) were analyzed. Cantonese-English bilinguals were grouped according to their L2 proficiency. Results reflected that 1) both groups showed preference to HA for PP, 2) LP group showed preference to VMC for adverb attachment; 3) there is a large gap in LA between LP and HP, suggesting that syntactic ambiguity resolution involves interaction of all the information available. The relationship between language proficiency and parsing is not so definitely supported by the results.