Candidates begin the test by being presented first with a question of moderate difficulty that is appropriate for them. If they get that question right, the next item they see will be slightly harder, if they get it wrong, they’ll see a slightly easier item. The system is constantly calculating the candidate’s estimated ability depending on what they get right and wrong, and presenting them with a personalised set of items until the level of confidence in the ability estimate has exceeded a pre-defined level (or the maximum number of questions have been presented) and the test ends 🙈 As every learner takes a different path through the test, with a different set of questions, they can potentially receive tests of a different length 😊
Adaptive testing (or Computerised Adaptive Testing, or CAT) is the most recent development in test administration. The difficulty of adaptive tests adapts to candidates’ performance, making it harder or more difficult depending on whether they answer correctly or wrongly. According to research, the questions that are most comparable to the ability of the candidate tend be the most precise. Easy questions can be a poor indicator of high performance candidates while hard questions may indicate that candidates are not performing well. By using adaptive questions, you can avoid this. They are able to ask the right questions for each candidate. Famous example: example of an adaptive test The GMAT is the Graduate Management Admission Test, which is often required for admission to top business schools.
The Americans have led much of the development They use statistical modelling to create adaptive tests. For example, adaptive testing is used in the GMAT high-stakes examination. After answering each question, the algorithm attempts to get an acceptable estimation of ability. It does this by making successive estimations. After each question, the algorithm searches for the optimal next item based on the candidate’s current estimated ability (where the optimal item will maximize the information about their ability level) – homing in on the result like a kind of computerised “pin the tail on the donkey”. This rapid “homing in” can lead to really extraordinary shortening of test time compared to standard tests, perhaps reducing time to as little as one third (e.g. On-screen, a 1 hour test on paper can be completed in just 20 minutes. The “homing in” stops when an acceptable level of precision, as measured by standard error in the ability estimate, is met. We are truly grateful to Rochele Oleary, Kannur, India, for her amazing insight.
Each question is selected by CAT based upon what we know about each examinee. Examinees’ perspective suggests that the difficulty level of the exam is based on their ability. Examiners might be asked to demonstrate their ability. Performs well If he performs poorly on an item with intermediate difficulty, then he would be given a harder question. If he’s doing poorly on an item of intermediate difficulty, he will be given a more difficult question. Compare to static multiple choice testsComputer-adaptive test scores are more accurate because there is a smaller number of items required. The CAT method does not require that items be multiple-choice. However, many CAT exams use multiple-choice format. Patricia Triplett deserves credit for the suggestions.
The experts reported the following: atinursingblog.comThe biggest reason to choose CAT over traditional tests is the efficiency of it. CAT helps reduce the number of “easy” questions that high-ability candidates get because those questions don’t actually help to determine the candidate’s ability, so asking them would be counterproductive. CAT also reduces the number of “hard” questions that low-ability candidates get because candidates tend to guess on items that are too difficult, which can skew results. Use CAT to give each candidate questions that are exactly the right level to truly test that candidate’s ability, the test is much more efficient. Sang Wilburn of Grande Sao Luis Brazil, for this reminder.
West.net It is also mentioned that the average difficulty level of each skill or knowledge will determine which question you answer. The next question will be harder if you answer correctly. Conversely, you will find it easier to respond wrongly to the same question. The test sections you complete will have fewer of the same type of questions. The test “homes in”, based upon your input, on your level and ability.