Cognitive load theory is an educational framework based on the idea that working memory, the mental system responsible for actively processing new information, has a strictly limited capacity, and effective instruction should be designed around that limit rather than ignoring it.

The theory was developed by educational psychologist John Sweller in the 1980s, building on cognitive science research into how much information a person can actively hold and manipulate in their mind at any given moment.

Working Memory Has a Limited Capacity

Three Types of Cognitive Load

Sweller's framework distinguishes three types of cognitive load: intrinsic load, the inherent difficulty of the material itself; extraneous load, unnecessary mental effort caused by poor instructional design; and germane load, the productive mental effort spent actually building understanding.

Practical applications of the theory generally focus on reducing extraneous load, such as removing distracting or irrelevant information from a lesson, while structuring material so germane load, the useful kind of mental effort, is directed toward genuinely building lasting understanding.


Sources

  1. Wikipedia β€” overview of cognitive load theory and its origins
  2. American Psychological Association β€” psychological background on working memory and learning
  3. Center for Education Statistics and Evaluation β€” practical explainer on applying cognitive load theory in teaching

FAQ

Who developed cognitive load theory?

Educational psychologist John Sweller developed it in the 1980s, building on research into working memory's limited capacity.

What are the three types of cognitive load?

Intrinsic load, from the material's inherent difficulty; extraneous load, unnecessary effort from poor design; and germane load, productive effort spent building understanding.

How is cognitive load theory typically applied in teaching?

Mainly by reducing extraneous load, such as removing distracting information, while structuring lessons so mental effort goes toward genuinely building understanding.


About the Author

We reference Wikipedia, American Psychological Association, and Center for Education Statistics and Evaluation to explain the background and current understanding of this topic.


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