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a collaborative knowledge base characterizing the state of current thought in Cognitive Science.
a neuropsychological test sensitive to brain damage, dementia, age and depression; consists of (e.g. nine) digit-symbol pairs (e.g. 1/-,2/┴ ... 7/Λ,8/X,9/=) followed by a list of digits. Under each digit the subject should write down the corresponding symbol as fast as possible. The number of correct symbols within the allowed time (e.g. 90 or 120 sec) is measured.

Definition contributed by Anonymous
digit/symbol coding test has been asserted to measure the following CONCEPTS
as measured by the contrast:

as measured by the contrast:

as measured by the contrast:

Phenotypes associated with digit/symbol coding test


No associations have been added.


No associations have been added.


No associations have been added.

IMPLEMENTATIONS of digit/symbol coding test
Configurable web-based test paradigm to map symbols to digits. Each digit is assigned to key
EXTERNAL DATASETS for digit/symbol coding test
No implementations have been added.

Experimental conditions are the subsets of an experiment that define the relevant experimental manipulation.


In the Cognitive Atlas, we define a contrast as any function over experimental conditions. The simplest contrast is the indicator value for a specific condition; more complex contrasts include linear or nonlinear functions of the indicator across different experimental conditions.

number of correct symbols

An indicator is a specific quantitative or qualitative variable that is recorded for analysis. These may include behavioral variables (such as response time, accuracy, or other measures of performance) or physiological variables (including genetics, psychophysiology, or brain imaging data).


Verbal mediation in the WAIS Digit Symbol subtest.
Koestline, W. Charles, and B. Oran 1969): 377-378.
Psychological Reports 25.2

Cortical areas related to performance of WAIS Digit Symbol Test: a functional imaging study.
Usui N, Haji T, Maruyama M, Katsuyama N, Uchida S, Hozawa A, Omori K, Tsuji I, Kawashima R, Taira M
Neuroscience letters (Neurosci Lett)
2009 Sep 29

Speed and memory in the WAIS-III Digit Symbol--Coding subtest across the adult lifespan.
Joy S, Kaplan E, Fein D
Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists (Arch Clin Neuropsychol)
2004 Sep