The inspiring idea that led most directly to Fechner's development of psychophysics was
A) Helmholtz's concept of conservation of energy.
B) Newton's conception of the solar spectrum.
C) Wertheimer's discovery of the phi phenomenon.
D) Weber's demonstration of the jnd.

Question

Quizplus · Accepted Answer

Fechner's development of psychophysics was most directly influenced by Weber's demonstration of the just noticeable difference (jnd) or the smallest difference between two stimuli that can be detected by an observer. Weber's work paved the way for Fechner to explore the relationship between physical stimuli and the psychological experience they evoke.

The Inspiring Idea That Led Most Directly to Fechner's Development