Psychology / Unit 4 Psych 0385 short lesson, about 20 seconds
Where Weber's Law Breaks Down
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The idea
Weber's constant differs by sense and the law holds poorly at very low and very high stimulus intensities.
In practice
The proportion needed for weight differs from the proportion needed for brightness, and both fail near threshold.
Where people slip
Weber's law is a strong approximation across the middle range, not a law of nature.
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