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is a test that requires generation of words cued with a specific letter and depends on phonemic abilities.

Definition contributed by Anonymous
Phenotypes associated with letter fluency test


No associations have been added.


No associations have been added.


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IMPLEMENTATIONS of letter fluency test
No implementations have been added.
EXTERNAL DATASETS for letter fluency test
No implementations have been added.

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


You must specify conditions before you can define contrasts.

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 words generated

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).


Extending the administration time of the letter fluency test increases sensitivity to cognitive status in aging.
Holtzer R, Goldin Y, Donovick PJ
Experimental aging research (Exp Aging Res)
2009 Jul-Sep