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Publication abstract: In the present study, we examined foveal and parafoveal processing in older compared with younger readers by using gaze-contingent paradigms with 4 conditions. Older and younger readers read sentences in which the text was either a) presented normally, b) the foveal word was masked as soon as it was fixated, c) all of the words to the left of the fixated word were masked, or d) all of the words to the right of the fixated word were masked. Although older and younger readers both found reading when the fixated word was masked quite difficult, the foveal mask increased sentence reading time more than 3-fold (3.4) for the older readers (in comparison with the control condition in which the sentence was presented normally) compared with the younger readers who took 1.3 times longer to read sentences in the foveal mask condition (in comparison with the control condition). The left and right parafoveal masks did not disrupt reading as severely as the foveal mask, though the right mask was more disruptive than the left mask. Also, there was some indication that the younger readers found the right mask condition relatively more disruptive than the left mask condition. Subject population: Adults, senior Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://library.ucsd.edu/research-and-collections/data-curation/) Rayner, Keith; Yang, Jinmian; Schuett, Susanne; Slattery, Timothy J (2015): Data from: The effect of foveal and parafoveal masks on the eye movements of older and younger readers. In Keith Rayner Eye Movements in Reading Data Collection. UC San Diego Library Digital Collections. http://dx.doi.org/10.6075/J0SF2T33 Rayner, K., Yang, J., Schuett, S., & Slattery, T.J. (2014). The effect of foveal and parafoveal masks on the eye movements of older and younger readers. Psychology and Aging, 29, 205-212. http://dx.doi.org/10.1037/a0036015 This package contains data and data processing information for a gaze-contingent moving window experiment. The raw data are available in ASC (text) format in the "ASC" sub-directory. The input parameter files and scripts used to process the data are available in the "Processing" sub-directory. The .pos file is unavailable, but the instructions to create one are available. Processed data files (one row for each item X subject combination) from Dampdry are available in the "Dampdry_Output(global eye movement measures)" sub-directory. See the Guide (Related Resource link, below) for details on some of the different types of files and column definitions that are contained in the data collection. Subject characteristics: Older readers - age 60-89 years (M = 77.6) DA1 files - O2_01_1.da1, O2_05_2.da1, O2_09_1.da1, O2_10_2.da1, O2_11_3.da1, O2_12_4.da1, O2_13_3.da1, O2_14_4.da1, O2_15_1.da1, O2_16_2.da1, O2_17_3.da1, O2_18_4.da1, O2_19_1.da1, O2_20_2.da1, O2_21_3.da1, O2_22_4.da1 Control subjects - age 18-32 (M = 21.3) DA1 files - Y2_03C3.da1, Y2_04C4.da1. Y2_05C1.da1, Y2_06C2.da1, Y2_07C3.da1, Y2_08C4.da1, Y2_09C1.da1, Y2_10C2.da1, Y2_11C3.da1, Y2_13C1.da1, Y2_16C4.da1, Y2_17C1.da1, Y2_18C2.da1, Y2_19C3.da1, Y2_20C4.da1, Y2_22C2.da1