Hi Tracy,
Great points here and thanks for sharing the research you’ve found. I don’t have any sources for those missing pieces unfortunately.
I don’t tend to use the piece about 21 days to learn a new skill – as you’ve correctly identified there isn’t a strong source for this.
Also the point about “Recapping your 3 points at the end provides 80% higher retention rate”, I would tend to phrase it as “Recapping your points helps your audience to remember”, rather than citing a specific figure that we don’t have support for.
Thanks,
Susan
