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The Quantcast Database Provides Audience Demographics of Website Users

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The Quantcast database provides audience demographics of website users


Definitions:

Just Noticeable Difference (Jnd)

The least alteration in a stimulus that is just noticeable by an organism.

Absolute Threshold

The minimum stimulus intensity required for detection by a sense organ, signifying the point at which a stimulus becomes perceptible to the senses.

Noticeable Threshold

A threshold is the level at which a stimulus becomes sufficiently strong to produce a discernible effect or reaction.

Range Threshold

The minimum and maximum values within which a particular sensory stimulus, action, or phenomenon is perceptible or has an effect.

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