Abstract:
:In previous eye movement research on word length effects, spatial width has been confounded with the number of letters. McDonald (2006) unconfounded these factors by rendering all words in sentences in constant spatial width. In the present study, the Arial font with proportional letter spacing was used for varying the number of letters while equating for spatial width, while the Courier font with monospaced letter spacing was used to measure the contribution of spatial width to the observed word length effect. Number of letters in words affected single fixation duration on target words, whereas words' spatial width determined fixation locations in words and the probability of skipping a word. The results support the existence of distinct subsystems for deciding where and when to move eyes in text (Rayner & McConkie, 1976). The number-of-letters effect in fixation duration may be explained by visual acuity, visual crowding, and/or serial letter processing.
journal_name
Vision Resjournal_title
Vision researchauthors
Hautala J,Hyönä J,Aro Mdoi
10.1016/j.visres.2011.05.015subject
Has Abstractpub_date
2011-08-01 00:00:00pages
1719-27issue
15eissn
0042-6989issn
1878-5646pii
S0042-6989(11)00189-1journal_volume
51pub_type
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