Computer-aided test (Computer-aided test) refers to a method of using computer-assisted testing. Computer-aided testing can be used in different fields.
In the field of teaching, you can use computers to test students' learning effectiveness and estimate their learning ability. They are generally divided into two methods: offline testing and online testing.
In the field of software testing, you can use a computer to test software and improve test efficiency.
In offline test, the computer selects a set of appropriate questions from the preset question bank according to the requirements specified by the teacher, prints them as a test paper, and after answering the students, the answer paper card can be sent to the computer through the "photoelectric reader". Conduct assessment and scoring. The standard answers are already stored in the computer for comparison.
The online test is to select the questions one by one from the computer's question library, and to ask the students questions through interactive means such as the display and the output printer. They send their answers to the computer through input devices such as a keyboard, which are reviewed and scored by the computer. One of them is called the adjustable test. The computer can decide the difficulty of the next step according to whether the students answered correctly. According to the law of education statistics, only a small number of questions and answers can determine the student’s learning status. .
Computer-aided testing, also known as computer-aided testing (CAT), that is, five parts: test composition, test implementation, grading and analysis, test question analysis and test bank, focusing on explaining that each part has different functions and functions in the entire system, and finally summarized .
(1) Composition of traditional tests
In traditional teaching, in order to prepare for a test, teachers often have to make some regulations: in order to facilitate management and distinguish different levels, how many questions should be tested in an effective time? What concepts are tested? How many problems does each concept have? Need to answer? How many objective questions? How many quiz questions? Among the objective questions, how many are non-questions? How many multiple-choice questions? How many matching questions or fill-in questions?
According to these regulations, teachers begin to form individual questions or groups of questions from the selected test questions.
In general, constructing a quiz is a manual process for teachers. For each new quiz, teachers who are not in contact must repeat the entire process from the beginning. In order to reduce the preparation process, teachers keep the test questions year after year.
(2) Composition of computer-aided test
Today, using computer-aided tests, the composition of the test is the same as that of the traditional test, but the whole process has been greatly simplified and improved. The computer can compose the test paper randomly according to the requirements. Whether it is the combination of question types, the distribution of scores, or the determination of time, it is very accurate.
When the test sending process is an independent system, it must include the test composition and the question bank, but there are fewer questions in the question bank. This independent system is suitable for unit tests of the course.
If enough computer terminal systems are available, students can be tested through the terminal, which has many advantages:
1. Because the computer knows which questions to test the students, and can remember the answers to the questions. Therefore, the order of the questions is irrelevant.
2. Because the computer can support printing, grading, and facilitate the handling of various problems, the examination paper can be omitted.
3. In a system with an internal clock, students can be tested individually within a certain period of time. If the tests given to students are the same and they have the same format, with time constraints, they will receive different questions for students of different degrees.
4. During the test, students can get feedback in time, and the test results and grades can be obtained as soon as the test is over.
In addition, the online test method also supports "adaptive test", many people are studying the experiment to implement "adaptive test" by computer.
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