Having a device didn't lower students' scores in comprehension tests within lectures, but it did lower scores in the end-of-term exam.

Those taking part were banned from using internet-enabled electronic devices for half of their lectures and allowed to access them for the other half.

Students perform less well in end-of-term exams if they are allowed access to an electronic device, such as a phone or tablet, for non-academic purposes in lectures, a new study.