OrthoKnow-SP

This dataset supports the public release of <b>OrthoKnow-SP</b>, a large-scale megastudy on Spanish orthographic knowledge. Over 27,000 native speakers of Spanish completed an 80-trial forced-choice task in which they selected the correctly spelled word from a pair containing one real word and one pseudohomophone. The study captured over 2.17 million data points, alongside rich metadata on participant demographics and response dynamics.To facilitate reuse and reproducibility, the following three files have been included in the repository:<br><b>ORTHOKNOW-SP PARTICIPANT DATA.csv: </b>This file contains participant-level information, including a unique identifier, age, gender, highest education level, the date and time of task completion, and the type of device used. It enables researchers to analyze performance by sociodemographic and technological variables.<b>ORTHOKNOW-SP RESPONSE DATA.csv: </b>This file includes trial-level response data for each participant. For each of the 80 trials, it reports the correct word, the incorrect pseudohomophone, the position of the trial, the participant’s reaction time in milliseconds, and whether the response was accurate. It is the main file for behavioral analyses.<b>OrthoKnow-SP.R: </b>This R script contains all data processing routines used to generate the final dataset. It performs key steps such as data import, participant filtering, reaction time trimming, and computation of composite difficulty scores. The script ensures transparency and full reproducibility of the analyses reported in the manuscript.All files are encoded in UTF-8 and can be directly opened in standard environments such as R, Python, or spreadsheet software.