Table 1.

Drift diffusion model specification

NumberModelStarting point (z)Drift rate (5)
1Valence independentz = 0.5v
2Valence-dependent starting point0 < z < 1v
3Valence-dependent drift ratez = 0.5v = β0 + β1 factory desirability
4Valence-dependent drift rate and starting point0 < z < 1v = β0 + β1 factory desirability
  • For each group, we ran four models which differed in whether we allowed the starting point to vary (models 2 and 4), whether we included a valence-dependent drift rate bias (models 3 and 4), or neither (model 1).