Table 2 Value functions for modeling and parameter estimations of value-based decision-making tasks: V (subjective value of offer), A (amount of offer), k (discounting rate), D (length of delay [days]), p (probability of winning in Probability Discounting for Gains task or losing in Probability Discounting for Losses task), G (amount of gain), λ (loss aversion parameter), L (amount of loss). Adapted from Pooseh et al.36.
From: Baseline impulsivity may moderate L-DOPA effects on value-based decision-making
Value-based decision-making task | Equation |
|---|---|
Delay Discounting | V = A/(1 + k D) |
Probability Discounting for Gains/Losses | V = A/(1 + k [1 − p]/p) |
Mixed Gambles | V = 1/2 (G − λ L) |
