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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

May 9th 2024

agape

agape

n. a complex form of love involving feelings of tenderness; protectiveness; self-denial; and aesthetic preference for the features, gestures, speech, and other traits of a person. The term, which derives from a Greek word meaning “brotherly love,” is sometimes used to denote an unselfish love as taught by such religious figures as Jesus and the Buddha.