Alan David Baddeley CBE FRS (born 23 March 1934) is a British psychologist.
[9] In 2000, Baddeley suggested adding a fourth component to his memory model called the episodic buffer.
This was called the word length effect and it demonstrated that pronunciation time rather than number of items determines the capacity of verbal short-term memory.
He studied the effects of depth and pressure on dexterity,[15] the impact of temperature on response time,[16] and context-dependent memory on land and underwater.
[17] Baddeley was the director of the Cognition and Brain Sciences Unit, a branch of the UK Medical Research Council, based in Cambridge, from 1974 - 1997.
[20] In 2001, Baddeley received the American Psychological Association (APA) Award for Distinguished Scientific Contributions.
[29] Baddeley was involved in the design of United Kingdom postcodes,[30] and was one of the founders of the European Society for Cognitive Psychology.