Provided is a cognitive function testing system capable of efficiently and objectively measuring cognitive functions related to, for example, ADHD and easily collecting detailed data. In addition, a cognitive function estimation system is provided to enable estimating and determining the probability of an individual having a disorder such as ADHD after the cognitive functions related to, for example, ADHD have been efficiently and objectively measured. In contrast to the conventional Stroop interference test that uses paper, one problem is displayed on one screen, and not only the correctness result of the problem for the test subject, but also coordinate information for when the test subject responds by manipulating a touch panel display, are recorded in a problem answer table. Furthermore, an estimation calculation based on a learning algorithm can be used to estimate the degree of cognitive function of the test subject.
