569 Weber–Fechner law
with Gustav Fechner (Fechner 1964), the relationship between physi-
cal magnitudes of stimuli and their perceived intensity was developed
and quantified. In studying such relationships, Fechner concluded, ‘In
order that the intensity of a sensation may increase in arithmetical
progression, the stimulus must increase in geometrical progression.’
Such a conclusion has since formed the basis of the Weber–Fechner
law.
Sensory perceptions of weight, vision (brightness), and sound, among
other areas, have since been the subject of considerable research exam-
ination, where the relationship between stimulus and perception is typ-
ically observed to be logarithmic. In particular, research on perception of
stimuli finds that the just noticeable difference (abbreviated JND), or differen-
tial threshold, which is the smallest detectable change or difference in a
sensory input that is perceivable by an individual, is a constant fraction
of the level of stimulation. Marketing researchers have subsequently
examined the law for its usefulness to understand pricing perception
for, among other topics, different magnitudes of pricing and price com-
parisons in relation to reference prices as well as consumer perceptions
of other sensory stimuli, and have found the law’s predicted relation-
ships to be consistent with research findings in many markting-related
areas.
KEY WORDS Stimuli, perception, detectable change
IMPLICATIONS
Marketers seeking to understand better how and to what extent con-
sumers may perceive pricing levels and pricing changes may benefit
from a greater knowledge of the relationships indicated by the Weber–
Fechner law. Ultimately, consumer responses to pricing strategies and
tactics may be a function of relationships between stimuli and percep-
tion that are predicted by the Weber–Fechner law. Similarly, consumer
responses to promotions and other marketing stimuli may also be poten-
tially understood better by examining such stimuli in terms of consumer
perceptions and the relationships expected given the Weber–Fechner
law and the just noticeable difference (JND) or differential threshold
concept.
APPLICATION AREAS AND FURTHER READINGS
Pricing
Miranda, M. J. (2001). ‘The Influence of Price Reductions on Shoppers’ Reference
Price and Reservation Price when Upgrading to Premium Brands,’ Journal of
Targeting Measurement and Analysis for Marketing, 10(1), 42–54.
Skouras, T., Avlonitis, G. J., and Indounas, K. A. (2005). ‘Economics and Marketing
on Pricing: How and Why do they Differ?’ Journal of Product and Brand Management,
14(6), 362–374.
Monroe, K. B., and Lee, A. Y. (1999). ‘Remembering Versus Knowing: Issues in
Buyers’ Processing of Price Information,’ Journal of the Academy of Marketing Science,
27(2), 207–225.
Monroe, Kent B. (1973). ‘Buyers’ Subjective Perceptions of Price,’ Journal of Marketing
Research, 10(1), February, 70–80.