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Showing posts from September, 2019

Why Experts Can Struggle to Teach Novices

This week in our Slack group on teaching, there was an interesting discussion about expertise and the amount of time needed to prep for instruction. I mentioned something that I recalled reading: that experts can be less effective in teaching novices because often the expert skips cognitive steps that the novice learner needs to understand.  I thought I'd dig into this a little more today on the blog.

The fact is novices and experts learn very differently.  The major reason for this is that experts not only know a lot about their chosen discipline, but they understand how that discipline is organized. As such, what has a clear structure to the expert is a jumbled set of unorganized information to the novice.  The information presented to novices "are more or less random data points."[1]  In contrast, when the expert learns something new in her area of expertise, she just plugs it into the knowledge structure that already exists in her long-term memory. Because the new in…