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Baddeley's model of working memory is a model of human memory proposed by Alan Baddeley and Graham Hitch in 1974, in an attempt to present a more accurate model of primary memory (often referred to as short-term memory). Working memory splits primary memory into multiple components, rather than considering it to be a single, unified construct. [1]
Baddeley and Hitch's model of working memory. In 1974 Baddeley and Hitch [11] introduced the multicomponent model of working memory.The theory proposed a model containing three components: the central executive, the phonological loop, and the visuospatial sketchpad with the central executive functioning as a control center of sorts, directing info between the phonological and visuospatial ...
The Working Memory Model (Baddeley and Hitch, 1974, revised 2000) His landmark study in 1975 on the capacity of short-term memory [11] showed that people remembered more short words than long words in a recall test. This was called the word length effect and it demonstrated that pronunciation time rather than number of items determines the ...
In 1974, Baddeley and Hitch [5] introduced and made popular the multicomponent model of working memory.This theory proposes a central executive that, among other things, is responsible for directing attention to relevant information, suppressing irrelevant information and inappropriate actions, and for coordinating cognitive processes when more than one task must be done at the same time.
The working memory model. In 1974 Baddeley and Hitch proposed a "working memory model" that replaced the general concept of short-term memory with active maintenance of information in short-term storage. In this model, working memory consists of three basic stores: the central executive, the phonological loop, and the visuo-spatial sketchpad.
Thus, while short-term memory components appear in working memory models, the concept of short-term memory is distinct from other concepts. Within Baddeley 's influential 1986 model of working memory two short-term storage mechanisms appear: the phonological loop and the visuospatial sketchpad .
The term was introduced by Alan Baddeley [2] [3] to describe a common pattern of dysfunction in executive functions, such as planning, abstract thinking, flexibility and behavioural control. It is thought to be Baddeley's hypothesized working memory system and the central executive that are the hypothetical systems impaired in DES. [2]
In the Baddeley's model of working memory, this ability comprises a central executive and two buffers – the phonological loop and the visuospatial sketch pad. Both storage buffers are characterized by passive storage and rehearsal information. This rehearsal function has been associated with frontal networks such as the Broca's area. [10]