Supplementary materials [Research data] to: Rousselle, L., & Vossius, L. (2021). Acquiring the cardinal knowledge of number words: A conceptual replication. Journal of Numerical Cognition, 7(3), 411-434. https://doi.org/10.5964/jnc.7029

The dataset includes three sheets with data of Study 1 and 2. Regarding Study 1, the first sheet present participants’ age (in years or months), their school grade and their performance in the numerical tasks (verbal number sequence, how-many and GaN tasks). The second sheet contains the data relative to the strategies used in the GaN task in Study 1. These data were used to analyse of the success profile, the answers, the frequency of grabbing / counting and the success / failure for each requested number). The last sheet reports the data collected for Study 2. The database includes participants’ performance in GaN task according to age, the age at which each number word was acquired as well as the time spent by each participant to reach the next knowledge level with respect to their initial level of cardinal knowledge.