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The importance of any consensus of people's likes and dislikes, and the practical value thereof, are often obtunded by the large variances of human hedonic behavior within and between people. Means to cope with these problems by the handling of such data, and means by which to constrain the magnitude via suitably high speed data collection systems are reviewed. An historical case is cited to show the sensitivity of people's likes and dislikes versus concentration changes, and it is argued that hedonics does not conform with laws of psychophysical intensity for specific or highly focal sensory research. A case is made from broad scope questioning and from actual stimulus work that general human hedonic behavior may or may not agree with that from specific focal studies. A method for classifying such behaviors into nine hedonic types is described together with its application to quantifying changes, or impacts. Visual hedonic data suggest hedonic behavioral patterns exist, are not dependent upon the rating technique, and are essential to analyses or interpretations if a consensus with meaning is to result. Sensory intensity functions, however useful themselves, are deemed inadequate substitutes to measure where hedonic consensus is needed, as well as misleading.
senses, perception, behavioral sciences, hedonics