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Why do two channels sometimes cost more than one

Why do two channels sometimes cost more than one?

The largest evidence base in this collection

Check: same thing, twice

When does modality actually pay

When does modality actually pay?

Worked Example: two models tested against each other

Check: both are real

What reverses the recommendation

Practice: Specify the video and the job aid separately

Check: right ask, wrong reason

Expert Depth: Is the mechanism dual representation or attention

Expert Depth: Is the mechanism dual representation or attention?

Expert Depth: Why the modality effect reverses

Check: worth the spend?

The lethal mutation: illustrations for their own sake

Check: attention instead?

Specify the design of a piece of instructional media by naming the principle, the moderator that governs it, and the affordance that would reverse the recommendation, so that words and pictures work together instead of competing.

Dual Coding: Two Channels, and the Ways Designers Waste Them

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