Table 7. Overview of the parameters of the DDMS models and priors for group means.
Parameter | DDMS: Temporal discounting | DDMS: Risk taking | Group-level prior (μ) |
---|---|---|---|
α | Boundary separation | Uniform (.01, 5) | |
τ | Non-decision-time | Uniform (.1, 6) | |
z | Bias (>.5: LL, < .5: SS) | Bias (>.5: risky, < .5: safe) | Uniform (.1, .9) |
νcoeff | Drift rate: value-difference scaling | Uniform (-100, 100) | |
νmax | Drift rate: maximum | Uniform (0,100) | |
log(k) | Discount rate now-trials | - | Uniform (-20,3) |
shiftlog(k) | log(k) reduction not-now | - | Gaussian (0, 2) |
log(h) | - | Probability discount rate | Uniform (-10, 10) |
λ | Mixture parameter (proportion of DDMS trials) | Uniform (-7,7) |