title: Intensity perception. IX. Effect of a fixed standard on resolution in identification.
abstract: This note reports some measurements of the changes in identification performance that result form presenting a fixed standard before each trial. These measurements indicate that the presence of the standard improves performance for test stimuli in the vicinity of the standard, except when the standard is near the extremes of the stimulus range.
mesh_terms: D004192:Discrimination, Psychological; D006801:Humans; D008144:Loudness Perception; D008722:Methods; D012015:Reference Standards