Does Extra Interletter Spacing Help Text Reading in Skilled Adult Readers?

Bibliographic References

• Bouma H. (1970). Interaction effects in parafoveal letter recognition. Nature, 226, 177–178. http://dx.doi. org/10.1038/226177a0
• Chung S. T. L. (2002). The effect of letter spacing on reading speed in central and peripheral vision. Investigative Ophthalmology & Visual Science, 43, 1270–1276.
• Engbert R., Nuthmann A., Richter E. M., & Reinhold K. (2005). SWIFT: A dynamical model of saccade generation during reading. Psychological Review, 112, 777–813. http://dx.doi.org/10.1037/0033-295x.112.4.777
• Facoetti A., Corradi N., Ruffino M., Gori S., & Zorzi M. (2010). Visual spatial attention and speech segmentation are both impaired in preschoolers at familial risk for developmental dyslexia. Dyslexia, 16, 226–239. http:// dx.doi.org/10.1002/dys.413
• Franceschini S., Gori S., Ruffino M., Pedrolli K., & Facoetti A. (2012). A causal link between visual spatial attention and reading acquisition. Current Biology, 22, 814–819. http://dx.doi.org/10.1016/j.cub.2012.03.013
• Franceschini S., Gori S., Ruffino M., Viola S., Molteni M., & Facoetti A., (2013). Action video games make dyslexic children read better. Current Biology, 23, 462–466. http:// dx.doi.org/10.1016/j.cub.2013.01.044
• Gomez P., & Perea M. (2014). Decomposing encoding and decisional components in visual-word recognition: A diffusion model analysis. The Quarterly Journal of Experimental Psychology, 67, 2455–2466. http://dx.doi.org/ 10.1080/17470218.2014.937447
• Gori S., Cecchini P., Bigoni A., Molteni M., & Facoetti A. (2014). Magnocellular-dorsal pathway and sub-lexical route in developmental dyslexia. Frontiers in Human Neuroscience, 8, 460. http://dx.doi.org/10.3389/ fnhum.2014.00460
• Gori S., Mascheretti S., Giora E., Ronconi L., Ruffino M., Quadrelli E., ... Marino C. (2015). The DCDC2 intron 2 deletion impairs illusory motion perception unveiling the selective role of magnocellular-dorsal stream in reading (dis)ability. Cerebral Cortex, 25, 1685–1695. http://dx.doi. org/10.1093/cercor/bhu234
• Gori S., & Facoetti A. (2014). Perceptual learning as a possible new approach for remediation and prevention of developmental dyslexia. Vision Research, 99, 78–87. http://dx.doi.org/10.1016/j.visres.2013.11.011
• Gori S., & Facoetti A. (2015). How the visual aspects can be crucial in reading acquisition? The intriguing case of crowding and developmental dyslexia. Journal of Vision, 15, 8. http://dx.doi.org/10.1167/15.1.8
• Jeffreys H. (1961).Theory of probability. Oxford, UK: Oxford University Press
• Martínez T., Vidal-Abarca E., Sellés P., & Gilabert R. (2008). Evaluación de las estrategias y los procesos de comprensión: El test de procesos de comprensión (TPC) [Evaluation of comprehension strategies and processes: Test of Comprehension Processes]. Infancia y Aprendizaje: Journal for the Study of Education and Development, 31, 319–332. http://dx.doi.org/10.1174/021037008785702956
• McCandliss B. D. (2012). Helping dyslexic children attend to letters within visual word forms. Proceedings of the National Academy of Science of the United States of America, 109, 11064–11065. http://dx.doi.org/10.1073/pnas.1209921109
• McLeish E. (2007). A study of the effect of letter spacing on the reading speed of young readers with low vision. British Journal of Visual Impairment, 25,133–143. http://dx. doi.org/10.1177/0264619607075995
• Montani V., Facoetti A., & Zorzi M. (2015). The effect of decreased interletter spacing on orthographic processing. Psychonomic Bulletin & Review, 22, 824–832. http://dx.doi. org/10.3758/s13423-014-0728-9
• Moores E., Cassim R., & Talcott J. B. (2011). Adults with dyslexia exhibit large effects of crowding, increased dependence on cues, and detrimental effects of distracters in visual search tasks. Neuropsychologia, 49, 3881–3890. http://dx.doi.org/10.1016/j.neuropsychologia.2011.10.005
• Perea M., & Gomez P. (2012a). Increasing interletter spacing facilitates encoding of words. Psychonomic Bulletin and Review, 19, 332–338. http://dx.doi.org/10.3758/s13423011-0214-6
• Perea M., & Gomez P. (2012b). Subtle increases in interletter spacing facilitate the encoding of words during normal reading. PLOS ONE, 7, e47568. http:// dx.doi.org/10.1371/journal.pone.0047568
• Perea M., Moret-Tatay C., & Gomez P. (2011). The effects of interletter spacing in visual-word recognition. Acta Psychologica, 137, 345–351. http://dx.doi.org/10.1016/j. actpsy.2011.04.003
• Perea M., Panadero V., Moret-Tatay C., & Gomez P. (2012). The effects of inter-letter spacing in visual-word recognition: Evidence with young normal readers and developmental dyslexics. Learning and Instruction, 22, 420–430. http://dx.doi. org/10.1016/j.learninstruc.2012.04.001
• Ratcliff R., Gomez P., & McKoon G. (2004). A diffusion model account of the lexical decision task. Psychological Review, 111, 159–182. http://dx.doi.org/10.1037/0033295x.111.1.159
• Reichle E. D., Pollatsek A., Fisher D. L., & Rayner K. (1998). Toward a model of eye movement control in reading. Psychological Review, 105, 125–157. http://dx. doi.org/10.1037/0033-295x.105.1.125
• Risko E. F., Lanthier S. N., & Besner D. (2011). Basic processes in reading: The effect of interletter spacing. Journal of Experimental Psychology: Learning, Memory, and Cognition, 37, 1449–1457. http://dx.doi.org/10.1037/a0024332
• Rouder J. N., Speckman P. L., Sun D., Morey R. D., & Iverson G. (2009). Bayesian t tests for accepting and rejecting the null hypothesis. Psychonomic Bulletin & Review, 16, 225–237. http://dx.doi.org/10.3758/pbr.16.2.225
• Schneps M. H., Thomson J. M., Chen C., Sonnert G., & Pomplun M. (2013). E-readers are more effective than paper for some with dyslexia. PLoS ONE, 18, e75634 http://dx.doi.org/10.1371/journal.pone.0075634
• Schneps M. H., Thomson J. M., Sonnert G., Pomplun M., Chen C., & Heffner-Wong A. (2013). Shorter lines facilitate reading in those who struggle. PLoS ONE, 5, e71161 http://dx.doi.org/10.1371/journal.pone.0071161
• Slattery T. J., & Rayner K. (2013). Effects of intraword and interword spacing on eye movements during reading: Exploring the optimal use of space in a line of text. Attention, Perception, & Psychophysics, 75, 1275–1292. http://dx.doi.org/10.3758/s13414-013-0463-8
• Spinelli D., de Luca M., Judica A., & Zoccolotti P. (2002). Crowding effects on word identification in developmental dyslexia. Cortex, 38, 179–200. http://dx.doi.org/10.1016/ S0010-9452(08)70649-X
• Stein J., & Walsh V. (1997). To see but not to read; the magnocellular theory of dyslexia. Trends in Neurosciences, 20, 147–152. http://dx.doi.org/10.1016/S0166-2236(96)01005-3
• Tai Y. C., Sheedy J., & Hayes J. (2009, June). The effect of interletter spacing on reading. Paper presented at the Computer Displays & Vision conference. Forest Grove, OR.
• van den Boer M., & Hakvoort B. E. (2015). Default spacing is the optimal spacing for word reading. The Quarterly Journal of Experimental Psychology, 68, 697–709. http://dx. doi.org/10.1080/17470218.2014.964272
• Vidyasagar T. R., & Pammer K. (2010). Dyslexia: A deficit in visuo-spatial attention, not in phonological processing. Trends in Cognitive Sciences, 14, 57–63. http://dx.doi. org/10.1016/j.tics.2009.12.003
• Vinckier F., Qiao E., Pallier C., Dehaene S., & Cohen L. (2011). The impact of letter spacing on reading: A test of the bigram coding hypothesis. Journal of Vision, 11, 8. http://dx.doi.org/10.1167/11.6.8
• Zorzi M., Barbiero C., Facoetti A., Lonciari I., Carrozzi M., Montico M., ... Ziegler J. C. (2012). Extra-large letter spacing improves reading in dyslexia. Proceedings of the National Academy of Sciences, 109, 11455–11459. http://dx. doi.org/10.1073/pnas.1205566109