Deary-Liewald Task

Welcome to the Deary-Liewald Task - a standardized cognitive test measuring reaction time and processing speed.

Simple Reaction Time Task

Show Details

About the Task

Ian Deary is a renowned professor in psychology, particularly known for his work in differential psychology and general intelligence. Together with members of his Edinburgh (Scotland) research group, he published an article about a four-choice response task.

Given that we know that response times correlate with general intelligence, it is useful to have an agreed standard procedure, and the Deary-Liewald task provides this (in a similar way as the Jensen task, Jensen, 2006).

Further Reading

  • Deary, Liewald & Nissan (2011). Behaviour Research Methods, 43, 258-268.
  • Jensen, A. R. (2006). Clocking the mind: mental chronometry and individual differences. Amsterdam, The Netherlands: Elsevier.