 Working memory, corresponding roughly to Atkinson and Shiffrin’s short term memory, refers to a capacity to actively manipulate a limited number of items in a conscious workspace (Baddeley 2007). There is some philosophical research on working memory (Block 2007; Carruthers 2015; Feest 2011), but the topic has so far been largely unexplored in mainstream philosophy of memory, and it will therefore not be discussed any further in this entry.