I think this supports a conclusion that many of us, using video clips in learning contexts may have been aware of, or suspected. I first recognised this when I was working on theTeaching and Learning with Digital Video Assets project (2004) with the University of Hull, and later on the EU Edutube Plus project (20011). I think where more analysis is needed is whether subjec content or the aesthetic/ filmic style affects the optimum length. The avaialability of tools
to create more interactive video content may also add a new variable to the mix. If you are using video clips in school I would welcome your comments below.
Via theo kuechel