Looking away and reciting what is read from memory has benefits established many years ago. Per the book Make It Stick:

A large-scale research program published findings in 1917 showing that “children in grades 3, 5, 6, and 8 studied brief biographies from Who’s Who in America. Some of them were directed to spend varying lengths of the study time looking up from the material and silently reciting to themselves what it contained. Those who did not do so simply continued to reread the material. At the end of the period, all the children were asked to write down what they could remember. The recall test was repeated three to four hours later. All the groups who had engaged in the recitation showed better retention than those who had not done so but had merely continued to review the material. The best results were from those spending about 60 percent of the study time in recitation.”

That is why Indoor Health Council’s Learning Management System encourages the use of information recital and proctoring through the flashcard model. See examples in Courses (scroll down to Lessons for Proctoring).