We are currently developing a **cognitive control test battery** that can be used for young adults, but (with some modifications) also for children and older adults. We have collected data using this test battery from 140 young adults, which we are analyzing now to validate the test battery. At the moment, we are also collecting data from primary school children. On this OSF page you can find the 9 tasks of the test battery. These tasks index three cognitive control functions, namely Shifting, Updating and Inhibition, in line with Miyake et al. (2000). All tasks are programmed in **PsychoPy**. More details on each task can be found in the .txt file. Currently, the instructions are still in Dutch but we will add English versions later. The tasks can be used together as a test battery, or as separate tasks. If you use our tasks, we would appreciate it if you would cite our test battery as follows in your output (e.g., manuscripts): De Pue, S., Aben B., Meijer, A.M., Dalla Costa, L., & Van den Bussche E. (2021). *A cognitive control test battery.* Unpublished material. [doi:10.17605/OSF.IO/E3RKP] If you detect errors, have questions or want to provide us with feedback, please contact us via sarah.depue@kuleuven.be or eva.vandenbussche@kuleuven.be.