A Researcher Manipulated the Intensity of Light in Increments of Five

Multiple Choice

A researcher manipulated the intensity of light in increments of five lumens and asked participants if the light was present or absent.The study found that two particular participants had the same _____ threshold for perceiving the light.Had the investigators manipulated the light in units of one lumen,a difference would have been found between the individuals.The study was lacking the _____ to detect this difference.

A) absolute;significance
B) difference;validity
C) absolute;power
D) difference;reliability