Signal detection theory and psychophysics12/13/2023 ![]() ![]() Journal of Experimental Psychology: Human Perception and Performance, 38, 880–890. Violation of the scalar property for time perception between 1 and 2 seconds: Evidence from interval discrimination, reproduction, and categorization. Attention, Perception, & Psychophysics, 72, 561–582. Timing and time perception: A review of recent behavioral and neuroscience findings and theoretical directions. From physical time to the first and second moments of psychological time. Experiments on subjective duration 1878-1975: A collection of power function exponents. Another law, referred to as the psychophysical law or Stevens’s power law, describes the relationship, for a given dimension in a sensory modality, between the psychological magnitude and the physical magnitude. One is the discrimination law of Weber which relates two physical quantities, the difference threshold and the magnitude of the sensory continuum under investigation. The chapter also offers the description of laws in the field of psychophysics. The signal detection theory is also described, which allows to make a fundamental distinction between sensitivity to sensations and the way of setting a response criterion. For each method, the absolute and difference thresholds correspond to an operational definition. The notions of absolute threshold and difference threshold are defined, and a series of classic methods for estimating these thresholds are described: methods of limits, of adjustment, and of constant stimuli. ![]() The purpose of this chapter is to provide the reader with some tools for studying and understanding the sensory systems in general.
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