Hi All, At the last unconference in Oxford I did a quick talk on some interesting data I'd gathered that seems to indicate a trend of increased examination performance (vs previous years) in a unit that made recorded lectures available for revision. If you're interested in this and didn't attend have a look at the "Learning Outcomes" video on this page:
http://opencast.org/video/opencast-matterhorn-2012-unconference-recordings There's also some further detail here: http://www.ucisa.ac.uk/bestpractice/awards/~/media/Files/members/awards/excellence/2011/Manchester.ashx Anyway, I embarked on a larger study to see if the trend could be demonstrated on a larger scale and I said I'd post to the list when I had some initial findings. In short, although some units did show a trend of increased performance, others did not. There's still a fair bit of data analysis to do, basically a few paired t-test (across lecture capture and non-lecture capture units using the same cohort) with unequal sample size and unequal variance is required, but the system has quite a lot of noise in it. This is mainly due to changes in staff, LMS and other factors that could account for the variation in results. In addition, the selection criteria of the larger scale test led to teaching staff volunteering whose teaching standards were already excellent and this likely made any impact of lecture capture more difficult to measure. I'll post again once I've done the in-depth analysis, but it'll take me a little while to get that done. Based on this the next obvious question is what could be done next to investigate this further (in further investigation is warranted)? Ideally a single blind control group experiment on a unit or set of units would produce a more conclusive answer. However I doubt this would be ethical. I can't imagine the practicalities of dividing a class in half and then telling them only 50% of students would receive lecture recordings. Even if it were done in all likelihood the group receiving recorded lectures would share them with the control group. An alternative would be to target a set of units that showed low variation across an extended period of time, then measure short term / long term changes with the addition of lecture capture. It might be a bit tricky to resource this option, so it's probably more appealing if it were an activity done within a larger project to rollout lecture capture. Sorry for the wall of text, but hopefully that's interesting to some of you. Best Regards Stuart Phillipson | Digital Media Projects Coordinator Room 1.83 Simon Building University of Manchester Brunswick Street Manchester M13 9PL United Kingdom e-mail: [email protected] Phone: 016130 60478
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