Baddeley, Thomson and Buchanan (1975)

Aim - To find out the existence of the phonological loop (Inner voice)

Procedure - P's were given word list for brief exposures and asked to write them down in serial order.

• Condition A - 5 words from a pool of one syllable, English words such as palm, twice. 
• Condition B - 5 words from a list of polysyllables such as organisation, association. 

Results - Average correct recall over several trials showed that the shorter words had greater recall. This was called the 'word length effect' 

Conclusion - Lab experiment in repeated measures was well controlled but could be criticized that longer words are simply less familiar than shorter words and therefore harder to recall.

- Consent.