The additive property of the inconsistency degree in intertemporal decision making through the generalization of psychophysical laws

► Generalization of the Weber-Fechner Psychophysical laws using one-parameter logarithmic and exponential functions from non-extensive statistical mechanics for time perception. ► Generalization of the Discount Function using the generalized time perception. ► Calculation of generalized neuroeconomics quantities: impulsivity and degree of consistency. ► Proposal of the need of a new category of experiments of the degree of consistency, where the value and time perception are additive. ► Extended review on experimental aspects of determining the discount function.