Topic: Weber’s law

Weber’s law concisely describes a mapping between a true change in a physical stimulus and the resulting perceived change. It states that the perceived change governing the behavior is a relative difference, i.e. the true change divided by the magnitude of the two stimuli (Fechner, 1966). This psychophysical phenomenon is observed in domains as varied as time, weight, numerosity, length, brightness, and statistical inference (Dehaene, 2003; Namboodiri et al., 2014). In sequential decision-making, on the other hand, it is usually assumed that behavior reflects the true physical evidence, even w