Michalska, P., Szymanik-Kostrzewska, A. (2020). The School Readiness of Six-Year-Old and Seven-Year- -Old Children as Measured by Intelligence and Development Scales (IDS) and Subjective Assessment of Mothers. Psychologia Rozwojowa, 2020, 43-58. doi: https://doi.org/10.4467/20843879PR.20.011.12266