Before revision: They then did the same with a list of words presented orally, all of which set the stage for the critical phase of the experiment which was portrayed as an assessment of subjects ’ ability to learn via both visual and auditory channels at once.
After revision: They then did the same with a list of words presented orally, all of which set the stage for the critical phase of the experiment which was portrayed as an assessment of subjects ' ability to learn via both visual and auditory channels at once.