The Nelson Denny Reading test (also called the Nelson Denny Police Test) takes 45 minutes including instruction time.
There are two sub tests and four scores as below,
Vocabulary Sub Test 80 multiple choice questions. The content is typical of any high school or college textbook.
Reading Comprehension Sub Test 5 short passages are given, also from general high school or college textbooks followed by 38 multiple choice questions based on the given passage.
Usually, about 50% of the questions are factual and the other half inferential. The total reading score is derived by adding the vocabulary score and the reading comprehension score. The reading comprehension scores are doubled to compensate for the greater number of questions in the first subset.
The NDRT test (or Nelson Denny police test) is also used to identify reading problems to predict academic success, as well as a measurement of positive educational interventions. The most valid academic predictor is the college and high school GPA (.56).
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