Crocker–Henderson odor system

a theory that posits four primary odor qualities: acid, burnt, caprylic, and fragrant. The presence of each primary in an odor is assessed via a 9-point scale (0–8) indicating the relative intensity of each quality. See also Henning’s odor prism. [Ernest C. Crocker (1888–1964) and Lloyd F. Henderson, U.S. chemists]

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Psychology term of the day

May 10th 2024

adaptometer

n. an instrument used to measure the time taken to adapt to a given amount of light, used in the diagnosis of night blindness and other visual disorders.