What is a Computer-Adaptive Test? In a computer-adaptive test, the computer screen displays one question at a time, which is chosen from a very large pool of questions categorized by content and difficulty. The first question is always of a medium difficulty, and each subsequent question is determined by your responses to all the previous questions. In other words, the CAT adjusts itself to your ability level - you’ll get few questions that are either too easy or too difficult for you.