Originally developed to measure driver aptitude and skill, d2 has become one of the most widely used measures of attention, particularly visual attention, throughout Europe.
In recent years it has become increasingly popular in the USA. It is now in its ninth edition following 40 years of effective use.
pplication areas include transport sectors, pharmaceutical sectors, sports psychology, educational psychology and clinical psychology.
The test itself (in its paper-and-pencil form) consists of a single 'recording blank'.On the reverse side is the standardised test form in a landscape layout of 14 test lines with 47 characters in each line. Each character consists of a letter, 'd' or 'p' marked with one, two, three or four small dashes. The respondent is required to scan the lines and cross out all occurrences of the letter 'd' with two dashes while ignoring all other characters.
The total number of processed symbols
The total count of mistakes made
F% Relative percentage of the mistakes
Percentage of the mistakes compared to the total count of symbols
GZ-F: Overall score
Overall number of processed symbols without mistakes
KL: concentration abilities
Numberof correctly identified symbols without mistake
SD: Attention Hesitation
The margin between the best and the worst score in the series.
OS Bulgaria organizes Certification Training for d2.
Our Certification Trainings are created according to the international standarts for professional test application. They are accredited by the Bulgarian Psychologists Federation and are approved by the publishers/authors of the original instrument.
The content of the courses covers the requirements for obtaining an Eurotest Certificate - EFPA and ISO 10667-1:2011. The Certification Trainings are designed to teach how to work with one or more (see combined trainings) tests. More information about Certification Trainings here.
Schedule and Registration Form here.