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Why should we care about lexical neighborhoods? What is CLEARPOND? What does CLEARPOND reveal about languages’ structures? How can I use CLEARPOND? http://clearpond.northwestern.edu. Orthographic Neighbors. Addition. Substitution. Deletion. Phonological Neighbors. Addition. Substitution.
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Why should we care about lexical neighborhoods? • What is CLEARPOND? • What does CLEARPOND reveal about languages’ structures? • How can I use CLEARPOND? • http://clearpond.northwestern.edu
Orthographic Neighbors Addition Substitution Deletion
Phonological Neighbors Addition Substitution Deletion
Neighborhoods Effects onLanguage Processing • Lexical decision (Andrews, 1992; Luce & Pisoni, 1998; Vitevitch & Luce, 1999; Yates, Locker, & Simpson, 2004; Ziegler, Muneaux, & Grainger, 2003) • Word learning (Frisch et al., 2000; Luce & Large, 2001; Thorn & Frankish, 2005; Roodenrys & Hinton, 2002; Storkel et al., 2006)
Differences across languages • Verbal picture naming • Dense phonological neighborhoods in English or Dutch speed up picture naming (Groot, Borgwaldt, Bos, & Vandeneijnden, 2002; Marian & Blumenfeld, 2006; Vitevitch & Stamer, 2006) • Dense phonological neighborhoods in Spanish slow down picture naming (Vitevitch & Stamer, 2006)
face 2 substitution neighbors (fact, race) 1 deletion neighbor (ace) face 3 substitutions 1 deletion 1 addition
2 1 face 5 Spanish substitutions 3 1 1
Introducing: • SUBTLEX-NL (Dutch) • SUBTLEX-US (English) • LEXIQUE (French) • SUBTLEX-DE (German) • SUBTLEX-ESP (Spanish) • Phonological transcriptions: eSpeak (http://espeak.sourceforge.net/)
English French German Spanish Dutch
English French German Spanish Dutch
English French German Spanish Dutch 27,751 Words in Each Language
English French German Spanish Dutch
mer /mɛʁ/ ver /vɛʁ/ vers /vɛʁ/ vert /vɛʁ/ verre /vɛʁ/ Homophones (light) Unique words (dark)
Recap • English has the largest orthographic neighborhood density • French has the largest phonological neighborhood density • Driven by homophones • Substitution neighbors are more common than additions or deletions
Most words are 6-8 letters long, but shorter words have larger neighborhoods. • Average word length in phonemes is language-specific
Foreign Neighbors 75% English Neighbors 25% French Neighbors
Phonological Within-Language and Foreign Neighbors Vitevitch, 2011
How to use CLEARPOND in your research http://clearpond.northwestern.edu
Multi-Word Input Rich Output Selection Frequency/length Filters to generate word lists Neighborhood filters across languages
Example Stimuli Creation:Bilingual lexical decision task • Generate four lists: • English ‘bridge’ words: large English and French neighborhoods • English-specific words: large English neighborhoods, but no French neighbors • French ‘bridge’ words: large French and English neighborhoods • French-specific words: large French neighborhoods, but no English neighborhoods
Built on comparable word lists across Dutch, English, French, German, and Spanish • Reveals common neighborhood patterns as well as language-specific trends • Calculates neighborhoods across languages for cross-linguistic and bilingual research • Free, online tool (http://clearpond.northwestern.edu) • Look up neighborhoods for a list of words • Generate a list based on desired characteristics
Acknowledgments Visit http://clearpond.northwestern.edu And see our manuscript in PLoS ONE (Marian, Bartolotti, Chabal, and Shook, 2012) • Bilingualism and Psycholinguistics Lab • Tony Lam • Xin Wang • Scott Schroeder • Funding sources • NICHD RO1 HD059858-01A