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CORSI Corsi Block-Tapping Test

D. Schellig
Neuro
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Application

Measures the storage capacity of spatial working memory.
The Block-Tapping Test is regarded as the gold standard for testing spatial memory span. For more than three decades the validity of this test has been repeatedly confirmed in the neuropsychological literature and it has been widely used in clinical contexts. It is often used in developmental psychology because it has proved to be a good predictor of the development of cognitive functions and is able to identify specific differences between the block span forwards and backwards. It is also used in drawing up professional opinions on medical conditions.

Administration

Respondents see nine irregularly arranged cubes. They watch a cursor that touches a certain number of cubes in turn. At the end of this sequence a signal sounds; the respondent must now repeat the given sequence either forwards or backwards, depending on the test form. The length of the sequence increases after every third item until the maximum of eight cubes is reached.
To test learning in spatial working memory, in two test forms (S3/S4) the spatial memory span is first identified. On the basis of this a target sequence is defined that is one longer than the memory span previously achieved.

Test forms

The test forms for adults and those for children differ in their starting sequence. Children begin with a sequence of two cubes and adults with a sequence of three.
S1/S2: For adults/children – spatial memory span forwards
S3/S4: For adults/children – learning process of spatial working memory and spatial memory span forwards
S5/S6: For adults/children – spatial memory span backwards
S7: spatial memory span backwards, geriatric test form

Scoring

The following main variables are scored, depending on the test form:

  • Immediate block span forwards (S1-S4) / immediate block span backwards (S5-S7): The longest sequence in which at least two of the three presented tasks were correctly reproduced – measure of spatial memory span.
  • Supra-block span (S3/S4): Number of repetitions needed before a particular target sequence is achieved – measure of short-term spatial learning.

Scoring elements

Table
Profile
Working time
Confidence interval
Profile analysis
Test protocol
Item analysis protocol
Progress chart
Special diagrammatic representation of results
Personalized Word report

Test type

Special Ability Tests

Test information

adaptive
modular
language-free item material
parallel test form
conforms to the Rasch-model
additional device required
high level of test security
wide norm spectrum
test form available for online presentation - open mode
links to CogniPlus
supervisor-supported testing

Languages

Arabic
Bosnian
Croatian
Czech
Dutch
English
Finnish
French
German
Greek
Hungarian
Italian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovene
Spanish
Swedish
Turkish

Duration

approx. 10-15 minutes, depending on test form

Age

Norms for ages 15+ (S1-S4).

Special features

Animated instruction phase.

Videos