A light that is actually twice as bright appears to us to be less than twice as bright.That observation led early psychologists to which of the following discoveries?

Question

A light that is actually twice as bright appears to us to be less than twice as bright.That observation led early psychologists to which of the following discoveries?​

Quizplus · Accepted Answer

This observation led to the discovery of the psychophysical function, which explains the relationship between the physical intensity of a stimulus and the psychological response to it. This function shows that the relationship is not linear, and that the perceived magnitude of the stimulus increases at a slower rate than the physical intensity.

A Light That Is Actually Twice as Bright Appears to Us