5.38 method of ratio production; method of fractionation; method of matching; method of multiplication; method of sensation ratios. Test method whereby a subject adjusts a stimulus along some dimension until that stimulus appears to be a specific fraction or multiple of a reference stimulus. Used primarily to scale sensations.
Annotation 1 When the variable stimulus is adjusted to some fraction of the reference, the procedure is called fractionation; when the stimulus is adjusted to some multiple of the reference, the procedure is called multiplication.
Annotation 2 When the variable stimulus is adjusted to appear equal to the reference stimulus the procedure is known as matching.« Back to Standards Terminolgy Index