By Scott Moomaw, COLRS Multimedia Communications Specialist

More than any other factor, studies have shown that the length of your presentations is the most important consideration in making sure your viewers remain engaged.

According to a study by professors Philip J. Guo, University of Rochester/MIT (now UC San Diego); Juho Kim, MIT (now KAIST); and Rob Rubin of edX, viewer engagement declines after six to nine, minutes, regardless of the video’s overall length.

The middle red bar is the median; the top and bottom blue bars are 25th and 75th percentiles, respectively. The median engagement time is at most 6 minutes

Figure 1: Boxplots of engagement times in minutes. The middle red bar is the median; the top and bottom blue bars are 25th and 75th percentiles, respectively. The median engagement time is at most 6 minutes.

So how do we make our videos a reasonable length while still getting across all the information a particular lesson may require? The short answer: pre-production. A carefully crafted script and production plan will help make the most effective use of your time. For particularly long or detailed lessons, it may be best to break the lesson down into shorter component parts.

COLRS at UIS stands ready to help you craft and produce video lessons that will maximize your students’ engagement, for the most effective use of both their time and yours. Our in-house studio, light board, and overhead camera are all ready for your use.