Well, no news here, just the confirmation that student appreciate specific and timely feedback with examples. See the infographics below for more details.
Student opinion of your feedback (By Turnitin)
More information about feedback and its effective strategies is available at my Diigo collection.
Seems to be like a reasonable model: SE2R
2R= Redirect & Resubmit
More details (and even a video) here.
Turnitin (we have it at NU as a writing tool and plagiarism detection software) published an interesting post . At the bottom of the page you can see a series of white papers on the topic.