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a collaborative knowledge base characterizing the state of current thought in Cognitive Science.

operant task TASK

participant learns to associate a particular outcome with a particular effort and characteristics thereof (e.g. frequency, strength)


instrumental learning task, instrumental conditioning task

Definition contributed by Anonymous
operant task has been asserted to measure the following CONCEPTS
as measured by the contrast:

as measured by the contrast:

Phenotypes associated with operant task


No associations have been added.


No associations have been added.


No associations have been added.

IMPLEMENTATIONS of operant task
No implementations have been added.
EXTERNAL DATASETS for operant task
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.

rate of responding

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).


Use of an operant task to estimate food reinforcement in adult humans with and without BED.
Nasser JA, Evans SM, Geliebter A, Pi-Sunyer FX, Foltin RW
Obesity (Silver Spring, Md.) (Obesity (Silver Spring))
2008 Aug