Split-Attention Effect
Version 1.0.0 · Updated 2026-07-28
CORE DEFINITION
The split-attention effect occurs when understanding requires searching, aligning, and mentally integrating information sources separated in space or time, creating additional cognitive load. An example is separating a geometry diagram from the explanatory steps needed to understand it. The need for integration matters; presenting information in two places is not automatically harmful.
SCAFFOLDING EFFECT
Reduce cognitive load
Place explanations needed to understand a diagram near their corresponding parts to reduce extra search and alignment. Avoid integration that obscures the figure or repeats information the learner already understands independently.
Anchor fast decisions
Working memory is limited. Searching for information, holding it temporarily, and aligning it with another source can add extraneous cognitive load that does not serve the learning goal. Physical integration can reduce these costs; the explanation does not require putting all related information into one sensory channel.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Split_attention_effectverified
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Modality_effectverified
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