What is the TOEFL CBT?
The Computer Based Test for TOEFL called the CBT , is an adaptive test; meaning that your next question’s difficulty level depends on the correctness of your response to the current question. This helps TOEFL to grade the person’s knowledge on the English language; by assuming him/her to be of an average capability at the beginning of the test, and with the responses received at the every question the program decides to give you a tougher or easier question based on whether your question was answered correctly or not. The CBT follows computer adaptive test strategy for the Listening and Structure section alone. The reading comprehension and Essay writing are not computer adaptive.