Working Memory Model: Baddeley And Hitch Flashcards
Working Memory Model
Baddeley and Hitch proposed the model to give a better understanding of STM. working memory is important for reasoning, learning and comprehension.
Central Executive
Has limited capacity and can process information from any sense. It works like a control mechanism and has responsibility for focusing, switching and dividing attention as well as linking to LTM.
It is supported by two system (phonological loop and visual sketchpad), which can be used as storage system to free up some of its own capacity to deal with more demanding tasks.
Articulatory Phonological Loop
The articulatory phonological loop has a limited capacity and is known as the ‘inner voice’ as information is encoded acoustically. It is a temporary storage system which stores material in a verbal form and allows you to rehearse it verbally. Badly and Hitch proposed that the phonological loop holds the amount of information that can be said in two seconds.
Visuo-spatial Sketchpad
The visa-spatial sketchpad encodes and stores visually, has a limited capacity and is known as the ‘inner eye’. It temporarily holds visual or spatial information.
Baddeley and Hitch (1976) Duel task technique
They found through he dual task technique that the more complex the task the more we involved the central executive is. This study explains why it is easier to do two completely different things rather than two different ones. An implication of this is that it is easier to watch TV and listen to someone (visuo-spatial sketchpad and phonological loop) than it is to talking to someone whilst listening to the radio (phonological loop and phonological loop).
Episodic buffer
Is like downloading something. Integrates info into single ‘episode’. Added later because it was realised that there needed to be a general store space, its an extra storage area and integrates info from the other 3.
