Why you can't read slides and listen to a speaker at the same time
More on PowerPoint. . .
Most of us really hate it when a speaker reads from her PowerPoint slides, but we may not know exactly why (besides the fact that she keeps her back to us the whole time and speaks like a robot).
Subvocalization means "the act or process of inaudibly articulating speech with the speech organs".
When we read, we are subvocalizing; that is, we are speaking the words in our heads. In fact, various muscles associated with speech actually move imperceptibly when we are subvocalizing.
In the extreme, some people move their lips when reading, but for most of us, subvocalizing is undetectable without sensitive equipment.
Imagine listening to a speaker live while also wearing a headset listening to the same speaker, delayed by a half second.
If we're listening to the words in our heads that we're reading on the slides, we can't also be listening to the speaker say the same thing at the same time.
It's as simple as that.
5 comments:
Thank you for explaining why I can't write in English while listening to someone speak French!
That sounds really hard, Jacki!
The scary thing is my husband and kids can have 2 conversations with 2 different people in 2 different languages at the same time.
Maybe that is true bilingualism.
Hi Lisa,
Ruth Colvin Clark has written a good book with some reseach into how reading/listening affects learners - it also applies to speaking and using ppts.
Here's the link http://www.amazon.com/e-Learning-Science-Instruction-Guidelines-Multimedia/dp/0787960519
Cheers,
Deb
Thanks for the link, Deb. I'll check it out!
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