Weber fraction

the ratio of the just noticeable difference (see difference threshold) to the intensity of a stimulus. Increases in the intensity of a stimulus that are just noticeably different to the observer are a constant fraction of the stimulus intensity. The size of the Weber fraction varies as a function of stimulus condition and sense modalities. See Weber’s law. [Ernst Heinrich Weber]

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Psychology term of the day

November 22nd 2024

colitis

n. inflammation of the colon, the main part of the large intestine. Colitis may be caused or aggravated by emotional disturbances, such as depression or anxiety.