Bibliography (9):

1. Acquisition of a Memory Skill

2. Expert performance: Its structure and acquisition

3. The role of deliberate practice in the acquisition of expert performance

4. Recall of random and distorted chess positions: Implications for the theory of expertise

5. Chess Expertise and Memory for Chess Positions in Children and Adults

6. The Malleability of Working Memory and Visuospatial Skills: A Randomized Controlled Study in Older Adults

7. Wikipedia Bibliography:

   1. Memory span

   2. https://en.wikipedia.org/wiki/Word_span  :

      https://en.wikipedia.org/wiki/Word_span

   3. https://en.wikipedia.org/wiki/Method_of_Loci  :

      https://en.wikipedia.org/wiki/Method_of_Loci