This Readme.txt file was generated on <20200318> by ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Reconciling Print-Size and Display-Size Constraints on Reading (Minnesota Lab for Low-Vision Research, 2020) 2. Author Information Principal Investigator Contact Information Name: Gordon E. Legge Institution: University of Minnesota Address: No.75 East River Road, MPLS, MN, 55455 Email: legge@umn.edu Associate or Co-investigator Contact Information Name: Nilsu Atilgan Institution: University of Minnesota Address: No.75 East River Road, MPLS, MN, 55455 Email: atilg001@umn.edu Associate or Co-investigator Contact Information Name: Ying-Zi Xiong Institution: University of Minnesota Address: No.75 East River Road, MPLS, MN, 55455 Email: yingzi@umn.edu 3. Date of data collection (single date, range, approximate date): February - April 2018, March - April 2019 4. Geographic location of data collection (where was data collected?): University of Minnesota, 75 East River Road, Elliott Hall, MPLS, MN, 55455 5. Information about funding sources that supported the collection of the data: This research was supported by NIH Grant EY002934. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Attribution-NonCommercial-NoDerivs 3.0 United States 2. Links to publications that cite or use the data: Part of the data were published in Atilgan, N., Xiong, Y., & Legge, G. E. (2019). Print Size and Display Size Constraints on Reading with Reduced Acuity. Investigative Ophthalmology & Visual Science, 60(9), 5941-5941. Available at https://iovs.arvojournals.org/article.aspx?articleid=2745085 As of March 31, 2020, full paper not yet published, but DRUM record will reflect new publications. 3. Links to other publicly accessible locations of the data: NA 4. Links/relationships to ancillary data sets: NA 5. Was data derived from another source? NO If yes, list source(s): 6. Recommended citation for the data: Atilgan, N., Xiong, Y., & Legge, G. E. (2020). Reconciling Print-Size and Display-Size Constraints on Reading [MInnesota Laboratory for Low-Vision Research, University of Minnesota, 2020]. Retrieved from the Data Repository for the University of Minnesota, http://hdl.handle.net/11299/212120. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: NormalVision_Timesdata.xlsx Short description: Dataset for normally-sighted participants in Times font condition. B. Filename: NormalVision_Courierdata.xlsx Short description: Dataset for normally-sighted participants in Courier font condition. C. Filename: LowVisiondata.xlsx Short description: Dataset for low vision participants D. Filename: Readme.txt Short description: Readme documentation file. 2. Relationship between files: The Readme.txt file provides descriptions of the data in all three data files, and information about data collection. 3. Additional related data collected that was not included in the current data package: NA 4. Are there multiple versions of the dataset? NO -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Two groups of subjects participated in the study: normally-sighted subjects and low vision subjects. Normally-sighted participants were tested both in normal viewing and artificially reduced acuity condition (by using low vision goggles). All participants' visual acuity were tested. During the main experiment, participants read 48 stories, with a 1-minute limit for each. Experimenter noted how many words participant read within one minute. This procedure was repeated for each of the 48 stories. In this way, the main dependent variable, reading speed, was obtained. The 48 stories were presented in different configurations on a 27-inch Apple Cinema display, such as multiple print sizes and display formats. We have 10 low-vision subjects and 30 normally-sighted subjects (16 subjects in Courier font group, 14 subjects in Times font group). All the subjects, including the low-vision group, read 48 stories. However, normally-sighted subjects had 48 different conditions (a different configuration for each story) while low vision subjects had only 24 different conditions (so they read 2 different stories in the same configuration). We averaged low vision subjects' reading performance across those 2 stories for the same condition, that's why there are only 24 rows for low-vision subjects. 2. Methods for processing the data: Reading speed was calculated based on how many words participant read within 1-minute. From this data, maximum reading speed (MRS) variable was obtained. 3. Instrument- or software-specific information needed to interpret the data: NA 4. Standards and calibration information, if appropriate: NA 5. Environmental/experimental conditions: NA 6. Describe any quality-assurance procedures performed on the data: NA 7. People involved with sample collection, processing, analysis and/or submission: Collection: Nilsu Atilgan, Paige Miller, Hunter Throndsen Processing and Analysis: Ying-Zi Xiong, Nilsu Atilgan Submission: Nilsu Atilgan ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: NormalVision_Timesdata.xlsx, ----------------------------------------- 1. Number of variables: 10 2. Number of cases/rows: 673 3. Missing data codes: NA 4. Variable List A. Name: subject Description: subject identifier B. Name: display Description: display formats: laptop, tablet, phone C. Name: condition Description: blur condition: blur (artificially reduced acuity with goggles) and noblur (normal viewing condition) D. Name: logMAR Description: Print size of the specific trial in logMAR unit E. Name: degrees Description: Print size of the specific trial in visual degrees F. Name: point Description: Print size of the specific trial in points G. Name: character per page Description: Number of characters per page for that specific trial H. Name: line per page Description: Number of lines per page for that specific trial I. Name: character per line Description: Number of characters per line for that specific trial J. Name: reading speed in character per minute Description: Reading speed per minute (how many characters were read in one minute) ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: NormalVision_Courierdata.xlsx, ----------------------------------------- 1. Number of variables: 10 2. Number of cases/rows: 769 3. Missing data codes: NA 4. Variable List A. Name: subject Description: subject identifier B. Name: display Description: display formats: laptop, tablet, phone C. Name: condition Description: blur condition: blur (artificially reduced acuity with goggles) and noblur (normal viewing condition) D. Name: logMAR Description: Print size of the specific trial in logMAR unit E. Name: degrees Description: Print size of the specific trial in visual degrees F. Name: point Description: Print size of the specific trial in points G. Name: character per page Description: Number of characters per page for that specific trial H. Name: line per page Description: Number of lines per page for that specific trial I. Name: character per line Description: Number of characters per line for that specific trial J. Name: reading speed in character per minute Description: Reading speed per minute (how many characters were read in one minute) ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: LowVisiondata.xlsx, ----------------------------------------- 1. Number of variables: 8 2. Number of cases/rows: 241 3. Missing data codes: NA 4. Variable List A. Name: subject Description: subject identifier B. Name: display Description: display formats: laptop, tablet, phone C. Name: visual acuity Description: visual acuity of each participant measured by Lighthouse near letter acuity chart D. Name: logMAR Description: Print size of the specific trial in logMAR unit E. Name: viewing distance Description: how far the screen is from the participants (in centimeters) F. Name: character per page Description: Number of characters per page for that specific trial G. Name: character per line Description: Number of characters per line for that specific trial H. Name: reading speed in character per minute Description: Reading speed per minute (how many characters were read in one minute)