In the nineteenth century,a psychophysicist named Ernst Weber found that:
A) the amount of change that is necessary for a stimulus to be noticed is systematically related to the intensity of the original stimulus itself.
B) for each stimulus there is an equal but opposite reaction.
C) the ratio between stimulus and response is a fixed proportion.
D) Solomon's Law was valid.

Question

Quizplus · Accepted Answer

Weber's law states that the amount of change in a physical stimulus that is necessary to produce a just noticeable difference (JND) is a constant fraction of the original stimulus intensity. In other words, the JND is proportional to the magnitude of the stimulus. This observation is known as Weber's law or Weber-Fechner law, and it forms one of the foundations of psychophysics. None of the other options are relevant to Weber's findings.

In the Nineteenth Century,a Psychophysicist Named Ernst Weber Found That