D2 Test of Attention
D2 Test of Attention and Comparison to Other Tests of Attention
D2 test of attention is a cancellation test involving simultaneous presentation of visually similar stimuli. It was originally developed in 1962 in Germany and Switzerland as an assessment tool for driving efficiency (Brickenkamp 1962) and used very commonly in Europe. It came into use in the USA only by 1998 (Brickenkamp and Zillmer 1998). It measures a lot of parameters of attention within short time, thereby making it useful to delineate various disorders. It is easy to administer as well. It is available in both paper-pencil and computerized versions. The task is to cancel out all target characters (a “d” with a total of two dashes placed above and/or below), which are interspersed with nontarget characters (a “d” with more or less than two dashes, and “p” characters with any number of dashes), in 14 successive timed trials.
It goes well with the neurobiological model of attention, particularly biased competition model...
References and Readings
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