Psychophysical scaling is a method used in psychology and neuroscience to measure the relationship between physical stimuli and the sensations they produce. It helps researchers understand how changes in stimulus intensity, such as brightness or loudness, correspond to changes in perception. This process often involves participants rating their experiences on a scale, allowing for quantifiable comparisons. One common approach in psychophysical scaling is the Stevens' Power Law, which describes how perceived intensity grows as a function of stimulus intensity. This law helps in predicting how people will perceive different levels of stimuli, providing insights into sensory processing and human perception.