Redundancy Effect

Shrink Definition

The redundancy effect is when adding extra, unnecessary information hurts learning instead of helping. Narrating text that's already on screen word for word, or over-explaining a clear diagram, forces learners to process the same thing twice. More information isn't always better, and redundancy wastes limited mental capacity. Clear instruction cuts what's not needed.

Plain language

Adding unnecessary, redundant information hurts rather than helps learning.

Shrink Insight

More explanation can subtract from understanding.

Why it matters

It guides instruction to cut redundant material that overloads learners. It shows that less can be more in teaching.

Common misunderstanding

People think adding more explanation always helps learners. Repeating information that's already clear can overload and hinder learning.

Shrink Perspective

Sometimes the kindest thing you can add is nothing.

Shrink Reflection

Where does my explaining repeat what's already clear?

Shrink Step

When explaining, cut information that repeats what's already clear.

Shrink Minute

Notice a slide or lesson that repeated itself and lost you.

Shrink Takeaway

Cut the redundant to aid learning.

Medical boundary

Evidence summary

A well-supported finding in cognitive load and multimedia learning research.