J Psycholinguist Res DOI 10.1007/s10936-017-9491-1 On the Eye Movement Control of Changing Reading Direction for a Single Word: The Case of Reading Numerals in Urdu Azizuddin Khan 1 · Otto Loberg 2 · Jarkko Hautala 2,3 © Springer Science+Business Media New York 2017 Abstract Typically orthographies are consistent in terms of reading direction, i.e. from left- to-right or right-to-left. However, some are bidirectional, i.e., certain parts of the text, (such as numerals in Urdu), are read against the default reading direction. Such sudden changes in reading direction may challenge the reader in many ways, at the level of planning of sac- cadic eye movements, changing the direction of attention, word recognition processes and cognitive reading strategies. The present study attempts to understand how readers achieve such sudden changes in reading direction at the level of eye movements and conscious cog- nitive reading strategies. Urdu readers reported employing a two-stage strategy for reading numerals by first counting the number of digits during right-to-left fixations, and only then forming numeric representation during left-to-right fixations. Eye movement findings were aligned with this strategy usage, as long numerals were often read with deliberate forward- and-backward fixation sequences. In these sequences fixations preceding saccades to default reading direction were shorter than against it, suggesting that different cognitive processes such as counting and formation of numeric representation were involved in fixations preced- ing left- and right-directed saccades. Finally, the change against the default reading direction was preceded by highly inflated fixation duration, pinpointing the oculomotor, attentional and cognitive demands in executing sudden changes in reading direction. B Azizuddin Khan khanaziz@iitb.ac.in Otto Loberg otto.h.loberg@student.jyu.fi Jarkko Hautala jarkko.v.hautala@jyu.fi 1 Psychophysiology Laboratory, Department of Humanities and Social Sciences, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra 400 076, India 2 Department of Psychology, University of Jyväskylä, Jyväskylä, Finland 3 Agora Center, University of Jyväskylä, Jyväskylä, Finland 123