d2 Test of Attention

{{Short description|Neuropsychological test}}

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| name = D2 Test of Attention

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| purpose =measure of selective and sustained attention

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The d2 Test of Attention is a neuropsychological measure of selective and sustained attention and visual scanning speed.{{cite book|author=Rhonda M. Ross|title=The D2 Test of Attention: An Examination of Age, Gender, and Cross-cultural Indices|url=https://books.google.com/books?id=yEz-MQAACAAJ|year=2005|publisher=Argosy University}} 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.{{cite book|author1=Margaret Semrud-Clikeman|author2=Phyllis Anne Teeter Ellison|title=Child Neuropsychology: Assessment and Interventions for Neurodevelopmental Disorders, 2nd Edition|url=https://books.google.com/books?id=NBGSF9Jyg6AC&pg=PA111|date=15 June 2009|publisher=Springer|isbn=978-0-387-88963-4|pages=111}} 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.{{cite book|author1=Michel Leclercq|author2=Peter Zimmermann|title=Applied Neuropsychology of Attention: Theory, Diagnosis and Rehabilitation|url=https://books.google.com/books?id=-iF5AgAAQBAJ&pg=PA193|date=4 April 2002|publisher=Psychology Press|isbn=978-1-135-43178-5|pages=193}} The original version of the test was created by Brickenkamp (1981) in Germany as a cancellation task.{{cite book|author=Otfried Spreen|title=A Compendium of Neuropsychological Tests: Administration, Norms, and Commentary|url=https://books.google.com/books?id=CIy0_GH4ubIC&pg=PA240|date=19 February 1998|publisher=Oxford University Press|isbn=978-0-19-510019-8|pages=240}} A meta-analysis, published in Personality and Individual Differences, found that adults have shown increasing scores in selective attention over the past three decades, as measured by the d2 Test of Attention.{{Cite web |last=Hedrih |first=Vladimir |date=2024-01-14 |title=Selective attention scores of adults have been increasing over generations, study finds |url=https://www.psypost.org/2024/01/selective-attention-scores-of-adults-have-been-increasing-over-generations-study-finds-220714 |access-date=2024-01-17 |website=PsyPost |language=en-US}}