DMI-2 (Diagnosis of Intellectual Abilities), by Anna Matczak, is a test designed for children aged 6–13 and used to assess operational thinking with the help of tasks requiring the so-called logical addition and logical multiplication.

The test, available for psychologists and, after appropriate training, also to educators, was put into use in 2001. In April 2022, a new research began, the results of which will allow to develop new norms and update the psychometric characteristics of the tool.