Computer Adaptive Testing (CAT)
Computer Adaptive Testing is a computer-based exam that uses a simple algorithm to adapt the test questions’ difficulty, in real-time, to the ability of each candidate.
This means that the algorithm re-estimates candidate’s ability based on the previous answers and the difficulty of those questions, that is as the candidate answers the questions correctly, more difficult questions are presented. On the other hand, from an inability to answer previous questions correctly, easier questions are displayed.
CAT tests produce scores with greater precision than conventional tests, providing valid and reliable measurements of candidates’ abilities and reducing item exposure and subsequent security risks.