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Psychological Phenomena

Weber-Fechner Law

Perception and Psychophysics Effects

The Weber-Fechner law is the name given to two related laws in psychophysics, Weber's law and Fechner's law, which both describe the relationship between an actual change in a physical stimulus and how large that change is perceived to be. The relationship has been studied across every sense, including vision, hearing, taste, touch and smell.

Facts
Core Claim
The perceived magnitude of a sensation increases as the logarithm of the physical stimulus intensity, not in direct proportion to it. 1
First Described Year
1860 1
Classification
Type of Phenomenon
Perceptual Phenomenon 1
Connections

In Branch

Sources
1. Wikipedia: Weber-Fechner Law
Wikimedia Foundation
  • lead section
    The Weber-Fechner laws are two related scientific laws in the field of psychophysics, known as Weber's law and Fechner's law.
  • History and formulation of the laws section
    They were first published in 1860 in the work Elemente der Psychophysik (Elements of Psychophysics).
  • lead section, phenomenon-kind classification
    The Weber-Fechner laws are two related scientific laws in the field of psychophysics, known as Weber's law and Fechner's law.
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