The data of KIT-M36 at 84 months old (in Wave 5) has been released. Datasets, instruments, and documentation are available at the Survey Research Data Archive, Academia Sinica, at https://srda.sinica.edu.tw/search/metadata/detail/D00250. For the complete list of KIT data, please visit https://srda.sinica.edu.tw/plan/?idx=SRDA.AS032.

Please note that as of Wave 5, the study participants have entered elementary school. Consequently, the survey schedule has been adjusted to take place in the second semester of each academic year, with data collection spanning two academic years. Additionally, new participants have been added to the study. For more details, please refer to the User Guide.

Since the parent questionnaire has been updated from the preschool version (for children aged 36–72 months) to the elementary school version (for children in Grades 1–3), the study now provides an IRT data file containing developmental estimates for children at 36, 48, 60, 72, and 84 months across different domains to link the two versions of the questionnaire. If you need the IRT data for the first four waves of KIT-M36, please re-download the previously released datasets (KIT-M36 at 36, 48, 60, and 72 months). (Note: These four datasets have been re-released in a revised version due to the addition of the IRT file.)