Perception
Laws and principles filed under Mind & Behavior / Perception.
Perception
Every guide includes meaning, mechanism, applications, limitations, related concepts, and traceable references.
Psychophysical regularity
Weber's Law
The smallest detectable change in a stimulus is often proportional to the starting intensity, not a fixed absolute amount.
Psychomotor performance model
Fitts's Law
Movement time, target distance and width, speed-accuracy trade-offs, and pointing-device evaluation.
Classical psychophysical model
Fechner's Law
Equal steps in subjective sensation were proposed to correspond to equal ratios, not equal additions, in physical stimulus intensity.
Choice reaction-time model
Hick-Hyman Law
Choice reaction time often increases approximately linearly with the information uncertainty of the alternatives, not simply with their raw count.
Task-dependent arousal-performance hypothesis
Yerkes-Dodson Law
Performance can vary nonlinearly with arousal, but curve shape and optimum depend on task difficulty, measurement, motivation, and the source of arousal.
Familiarity-preference effect
Mere-Exposure Effect
Repeated, unreinforced exposure to a stimulus can increase average liking or positive evaluation, especially when the stimulus is initially unfamiliar and exposure remains moderate.