Working memory, previously referred to as short-term memory, refers to the memory that one is currently processing. This memory lasts for less than a minute and is limited in capacity. In an attempt to better understand working memory, Alan Baddeley developed the working memory approach. According to this approach, working memory is a system with several different parts that control the information being processed. This led to the development of Allan Baddeley’s Model of Working Memory. This model assumes that each component has a limited capacity and is relatively, not entirely, independent of the others. Baddeley’s original model contained three components, the phonological loop, the visuo-spatial sketchpad, and the central executive. However, the current model also contains the episodic buffer.