Retrieval mechanisms in sentence comprehension

This work investigates the nature of the memory mechanisms utilized in language comprehension. Through the use of the Speed Accuracy Tradeoff (SAT) paradigm (Wickelgren, 1977), healthy young adults were studied for the use of parallel or serial search mechanisms to understand syntactically complex sentences with multiple embeddings. Systematically designed sentence stimuli tested whether the relevant memory mechanism differs when reanalysis is required. Results indicated that sentence length and syntactic ambiguity affected overall accuracy of sentence comprehension. The rate in which information was retrieved did not vary for most sentence types, but may have been affected by length in one type of sentence (ambiguous "early closure" sentences). The data support a parallel, content-addressable retrieval mechanism for information in most sentences but may provide evidence for serial search in ambiguous sentences that require complex syntactic reanalysis.

Department dc:contributor.department

Harvard--MIT Program in Health Sciences and Technology.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2014

Author dc:creator

• Whitlock, Jordan Ashley

Advisor dc:contributor.advisor

• David Caplan.

• Harvard--MIT Program in Health Sciences and Technology.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/90177

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/90177