Landry and Bartling (2011)

• This study investigated the articulatory suppression in relation to the working memory model
• The aim was to study whether articulatory suppression would influence the recall of a list of phonologically dissimilar letters
• Research method


  1. True experiment

  2. Independent samples design
• Group A had to memorise a list with no other influencing variable
• Group B had to memorise the list while repeating the numbers 1 and 2, at a rate of two numbers per second
• There were ten lists each consisting of a series of 7 letters randomly constructed from the letters F, K, L, M, R, X and Q
• There were a total of ten trials per group
• Results showed that Group A had a better recall percentage of 76% compared to Group B with a recall percentage of 45%
• The standard deviation for Group A was 0.13 and Group B had a standard deviation of 0.14
• Articulatory suppression


  When both components of the phonological loop are in use, hence both are under strain and do not perform as well.
• Results supported the working memory model
• Strengths


  • Cause and effect established
  • High level of internal validity
  • Replicable
• Weaknesses


  • Lacks ecological validity