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An alternative version of the AX-CPT in which the letter stimuli are replaced with simple dot patterns derived from Braille language. Dot patterns are more easily parametrically manipulated, and require less time between stimuli presentations because they are not as easily stored in working memory as letters, thus increasing the proportion of errors.
Synonyms: Dot Pattern Expectancy
Definition contributed by CTorgerson about four years ago

Descendant of: AX-CPT task
AX-DPX has been asserted to measure the following CONCEPTS
as measured by the contrast:
  • Please add a contrast

as measured by the contrast:
  • Please add a contrast

DISORDERS associated with AX-DPX
No associations have been added.

No implementations have been added.
No external datasets 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.


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).

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Term Bibliography

The dot pattern expectancy task: reliability and replication of deficits in schizophrenia.
Jones JA, Sponheim SR, MacDonald AW 3rd
Psychological assessment (Psychol Assess)
2010 Mar
Citation added by MLewis about five years ago
Citation Profile

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