description Alan Baddeley Overview
Alan Baddeley is a British cognitive psychologist known for experimental research on human memory. With Graham Hitch, he proposed the multicomponent model of working memory in 1974, replacing the idea of a single short-term store with interacting systems for temporary storage and mental processing. Later versions included the phonological loop, visuospatial sketchpad, central executive, and episodic buffer. The model is widely used in cognitive psychology, neuroscience, education, and clinical research.
insights Ranking position
Alan Baddeley ranks #13 of 228 in the Psychologist ranking, behind Elizabeth Loftus, ahead of Mary Ainsworth.
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What are the components of Baddeley and Hitch's working-memory model?
The 1974 model originally included a central executive, a phonological loop, and a visuospatial sketchpad. Baddeley later added the episodic buffer to explain how information from different sources can be integrated.
What does the phonological loop do?
It temporarily maintains speech-based and auditory information through a short-lived store and an articulatory rehearsal process. Effects such as poorer recall for longer words helped Baddeley investigate its limited capacity.
How is working memory different from short-term memory?
A simple short-term store mainly describes temporary retention. Baddeley's working-memory model also explains how specialized systems hold and manipulate verbal or visual information while people reason, read, or solve problems.
Why was the episodic buffer added to the model?
Baddeley introduced it around 2000 to address how working memory binds information from the phonological loop, visuospatial system, and long-term memory. It is described as a limited-capacity, multimodal store operating under executive control.
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