D2 Test of Attention

From Wikipedia, the free encyclopedia
Jump to: navigation, search

The d2 Test of Attention is a neuropsychological measure of selective and sustained attention and visual scanning speed.[1] It is a paper and pencil test that asks participants to cross out any letter "d" with two marks around above it or below it in any order.[2] The surrounding distractors are usually similar to the target stimulus, for example a "p" with two marks or a "d" with one or three marks.[3] The original version of the test was created by Brickenkamp (1981) in Germany as a cancellation task.[4]


  1. ^ Rhonda M. Ross (2005). The D2 Test of Attention: An Examination of Age, Gender, and Cross-cultural Indices. Argosy University. 
  2. ^ Margaret Semrud-Clikeman; Phyllis Anne Teeter Ellison (15 June 2009). Child Neuropsychology: Assessment and Interventions for Neurodevelopmental Disorders, 2nd Edition. Springer. p. 111. ISBN 978-0-387-88963-4. 
  3. ^ Michel Leclercq; Peter Zimmermann (4 April 2002). Applied Neuropsychology of Attention: Theory, Diagnosis and Rehabilitation. Psychology Press. p. 193. ISBN 978-1-135-43178-5. 
  4. ^ Otfried Spreen (19 February 1998). A Compendium of Neuropsychological Tests: Administration, Norms, and Commentary. Oxford University Press. p. 240. ISBN 978-0-19-510019-8. 

Further reading[edit]