stanley smith stevens
Definition
Proper noun: - Stanley Smith Stevens: A United States psychologist and psychophysicist known for his significant contributions to the field of sensory perception and measurement. He is most famous for proposing Stevens' power law, a model that describes the relationship between the magnitude of a physical stimulus and its perceived intensity, which he offered as an alternative to Fechner's law.
Usage
- Proper noun:
- Stanley Smith Stevens conducted pioneering research in psychophysics.
- The work of Stanley Smith Stevens challenged the classical Fechnerian approach to sensation.
Advanced Usage
- "Stevens' power law": The psychophysical law proposed by Stanley Smith Stevens, expressed as ψ = kφⁿ, where ψ is perceived magnitude, φ is physical intensity, k is a constant, and n is an exponent that varies by sensory modality.
- According to Stevens' power law, the perception of loudness grows as a power function of sound pressure.
Variants and Related Words
- Stevens' law: A common shorthand for Stevens' power law.
- Psychophysics: The subfield of psychology, heavily influenced by Stevens, concerned with the relationship between physical stimuli and sensory experiences.
- Magnitude estimation: A psychophysical scaling method developed and advocated by Stanley Smith Stevens.
Synonyms
- Psychophysicist: A scientist who studies the relationship between physical stimuli and sensory perceptions. (This describes his professional field.)
- Researcher: A person who conducts systematic investigation. (This describes his general activity.)
Related Terms and Concepts
- Fechner's law: The earlier psychophysical law that Stevens' power law sought to replace, stating that sensation is proportional to the logarithm of stimulus intensity.
- Sensory scaling: The measurement of perceived intensity, a central theme in Stevens' work.
- Exponent: In the context of his law, the value 'n' which differs for sensations like brightness (n~0.33), electric shock (n~3.5), or loudness (n~0.67).
Noun
-
United States psychologist and psychophysicist who proposed Stevens' power law to replace Fechner's law (1906-1973)
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