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Article: Effect of letter spacing on visual span and reading speed

TitleEffect of letter spacing on visual span and reading speed
Authors
KeywordsLetter spacing
Reading speed
Visual crowding
Visual span
Issue Date2007
PublisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://wwwjournalofvisionorg/
Citation
Journal Of Vision, 2007, v. 7 n. 2, article no. 2 How to Cite?
AbstractS. T. L. Chung (2002) has shown that rapid serial visual presentation (RSVP) reading speed varies with letter spacing, peaking near the standard letter spacing for text and decreasing for both smaller and larger spacings. In this study, we tested the hypothesis that the dependence of reading speed on letter spacing is mediated by the size of the visual span - the number of letters recognized with high accuracy without moving the eyes. If so, the size of the visual span and reading speed should show a similar dependence on lefter spacing. We tested this prediction for RSVP reading and asked whether it generalizes to the reading of blocks of text requiring eye movements. We measured visual-span profiles and reading speeds as a function of letter spacing. Visual-span profiles, measured with trigrams (strings of three random letters), are plots of letter-recognition accuracy as a function of letter position left or right of fixation. Size of the visual span was quantified by a measure of the area under the visual-span profile. Reading performance was measured using two presentation methods: RSVP and flashcard (a short block of text on four lines). We found that the size of the visual span and the reading speeds measured by the two presentation methods showed a qualitatively similar dependence on letter spacing and that they were highly correlated. These results are consistent with the view that the size of the visual span is a primary visual factor that limits reading speed. © ARVO.
Persistent Identifierhttp://hdl.handle.net/10722/89568
ISSN
2015 Impact Factor: 2.341
2015 SCImago Journal Rankings: 1.042
PubMed Central ID
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, Den_HK
dc.contributor.authorCheung, SHen_HK
dc.contributor.authorLegge, GEen_HK
dc.contributor.authorChung, STLen_HK
dc.date.accessioned2010-09-06T09:58:41Z-
dc.date.available2010-09-06T09:58:41Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of Vision, 2007, v. 7 n. 2, article no. 2en_HK
dc.identifier.issn1534-7362en_HK
dc.identifier.urihttp://hdl.handle.net/10722/89568-
dc.description.abstractS. T. L. Chung (2002) has shown that rapid serial visual presentation (RSVP) reading speed varies with letter spacing, peaking near the standard letter spacing for text and decreasing for both smaller and larger spacings. In this study, we tested the hypothesis that the dependence of reading speed on letter spacing is mediated by the size of the visual span - the number of letters recognized with high accuracy without moving the eyes. If so, the size of the visual span and reading speed should show a similar dependence on lefter spacing. We tested this prediction for RSVP reading and asked whether it generalizes to the reading of blocks of text requiring eye movements. We measured visual-span profiles and reading speeds as a function of letter spacing. Visual-span profiles, measured with trigrams (strings of three random letters), are plots of letter-recognition accuracy as a function of letter position left or right of fixation. Size of the visual span was quantified by a measure of the area under the visual-span profile. Reading performance was measured using two presentation methods: RSVP and flashcard (a short block of text on four lines). We found that the size of the visual span and the reading speeds measured by the two presentation methods showed a qualitatively similar dependence on letter spacing and that they were highly correlated. These results are consistent with the view that the size of the visual span is a primary visual factor that limits reading speed. © ARVO.en_HK
dc.languageengen_HK
dc.publisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://wwwjournalofvisionorg/en_HK
dc.relation.ispartofJournal of Visionen_HK
dc.subjectLetter spacingen_HK
dc.subjectReading speeden_HK
dc.subjectVisual crowdingen_HK
dc.subjectVisual spanen_HK
dc.titleEffect of letter spacing on visual span and reading speeden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1534-7362&volume=7&issue=2&spage=1&epage=10&date=2007&atitle=Effect+of+letter+spacing+on+visual+span+and+reading+speeden_HK
dc.identifier.emailCheung, SH:singhang@hku.hken_HK
dc.identifier.authorityCheung, SH=rp00590en_HK
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1167/7.2.2en_HK
dc.identifier.pmid18217817-
dc.identifier.pmcidPMC2729067-
dc.identifier.scopuseid_2-s2.0-33846881603en_HK
dc.identifier.hkuros132541en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846881603&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume7en_HK
dc.identifier.issue2en_HK
dc.identifier.spagearticle no. 2en_HK
dc.identifier.epagearticle no. 2en_HK
dc.identifier.isiWOS:000251614400003-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridYu, D=14833561400en_HK
dc.identifier.scopusauthoridCheung, SH=7202473508en_HK
dc.identifier.scopusauthoridLegge, GE=7005064208en_HK
dc.identifier.scopusauthoridChung, STL=10440472700en_HK
dc.identifier.citeulike3680561-

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