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Category: Data

Description: This repository contains the data from a cluster randomized trial testing the effectiveness of a digital game-based learning tool for beginning readers of Dutch at the onset of first grade. The study offered participation to all 312 children enrolled into 16 classrooms at 8 schools in Groningen, The Netherlands and Ghent in the Dutch-speaking part of Belgium. Randomization took place at the classroom level into treatment groups of the reading intervention (GraphoGame-NL), an active control group playing math content in the same gaming framework (GraphoGame-NL-Math) and a passive control group only attending classroom activities. The intervention consisted of 10 to 15 minutes of daily playing during school time for a period of up to 7 weeks. We collected data on nonverbal intelligence, reading fluency, phonological skills, and rapid automatized naming. In addition, we measured written lexical decision and letter speech sound association with purpose built in-game levels. In this repository we deposit the data of 266 children who consented to study participation and completed the assessments, of which 247 adhered to the intervention and played at least 20 sessions. We provide two data frames: one with results from the behavioural pen-and-paper tests, and one for the single trial results from the in-game assessments. The OSF wiki contains detailed information of the variables in both dataframes and also the code to open them in R.