Dot cancellation test

Dot cancellation test
Synonyms	Bourdon-Wiersma test
Purpose	test visual perception

The dot cancellation test or Bourdon–Wiersma test is a commonly used test of combined visual perception and vigilance.[1][2]

The test has been used in the evaluation of stroke where subjects were instructed to cross out all groups of four dots on an A4 paper. The numbers of uncrossed groups of four dots, groups of dots other than four crossed, and the time spent (maximum, 15 minutes) were taken into account.[2] The Group–Bourdon test, a modification of the Bourdon–Wiersma, is one of a number of psychometric tests which trainee train drivers in the UK are required to pass.[3][4]

The test is based on the work of French psychologist Benjamin B. Bourdon (1860–1943) and Dutch neurologist Enno Dirk Wiersma [nl] (1858–1940).[5][6]

References

1. Laursen, Peter. "Functions and Parameterization". Cognitive Function Scanner. Retrieved 1 March 2011.
2. Akinwuntan AE, De Weerdt W, Feys H, Baten G, Arno P, Kiekens C (March 2005). "The validity of a road test after stroke". Arch Phys Med Rehabil. 86 (3): 421–6. doi:10.1016/j.apmr.2004.04.047. PMID 15759222.
3. "Group–Bourdon tool". Digital Reality. Archived from the original on 3 January 2011. Retrieved 2 March 2011.
4. Nijenhuis, J; Vanderflier, H (19 July 2002). "The correlation of g with attentional and perceptual-motor ability tests". Personality and Individual Differences. 33 (2): 287–297. doi:10.1016/S0191-8869(01)00152-0.
5. Ono H, Lillakas L, Kapoor A, Wong I, 2013, "Replicating and extending Bourdon’s (1902) experiment on motion parallax" Perception 42(1) 45 – 59
6. Bourdon test definition

Further reading

Grewel, F (October 1953). "The Bourdon–Wiersma test". Folia Psychiatrica, Neurologica et Neurochirurgica Neerlandica. 56 (5): 694–703. PMID 13117138.