TABLE 2.
Average model parameters from fits of the diffusion model for each experiment
| Drift rates | Filler | Emotional | ||||
|---|---|---|---|---|---|---|
| Exp. 1 (Lex) | HF word | LF word | Non-word | Pos | Neg | |
| Non-dysphoric | 0.503 (0.19) | 0.212 (0.08) | −0.308 (0.10) | 0.453 (0.23) | 0.336 (0.12) | |
| Dysphoric | 0.396 (0.09) | 0.182 (0.05) | −0.248 (0.12) | 0.363 (0.13) | 0.333 (0.12) | |
| Exp. 2 (Rn) | HF old | HF new | LF old | LF new | Pos old | Neg old |
| Non-dysphoric | 0.106 (0.06) | −0.167 (0.09) | 0.198 (0.07) | −0.263 (0.08) | 0.234 (0.08) | 0.171 (0.10) |
| Dysphoric | 0.101 (0.07) | −0.091 (0.10) | 0.168 (0.08) | −0.214 (0.09) | 0.132 (0.07) | 0.158 (0.12) |
| Exp. 3 (Rn) | HF old | HF new | LF old | LF new | Pos new | Neg new |
| Non-dysphoric | 0.092 (0.08) | −0.118 (0.09) | 0.248 (0.09) | −0.0301 (0.10) | −0.181 (0.09) | −0.256 (0.14) |
| Dysphoric | 0.089 (0.07) | −0.112 (0.07) | 0.173 (0.11) | −0.214 (0.11) | −0.102 (0.10) | −0.108 (0.11) |
| Response criteria | Boundary sep. (a) | Starting point (z) | Bias (z/a) | Non-decision time (Ter) | ||
| Exp. 1 (Lex) | ||||||
| Non-dysphoric | .128 (.02) | .064 (.01) | .506 (.03) | .428 (.04) | ||
| Dysphoric | .149 (.05) | .069 (.02) | .525 (.05) | .432 (.05) | ||
| Exp. 2 (Rn) | ||||||
| Non-dysphoric | .138 (.03) | .058 (.02) | .579 (.05) | .576 (.06) | ||
| Dysphoric | .137 (.02) | .059 (.01) | .576 (.05) | .538 (.07) | ||
| Exp. 3 (Rn) | ||||||
| Non-dysphoric | .150 (.03) | .064 (.01) | .573 (.06) | .571 (.06) | ||
| Dysphoric | .126 (.03) | .054 (.01) | .563 (.08) | .515 (.10) | ||
Notes: Standard deviations are shown in parenthesis. Lex=lexical decision task; Rn=recognition memory task; HP=high frequency; LF=low frequency; Pos=positively valenced words; Neg=negatively valenced words; old=studied words; new=unstudied words; a=boundary separation; Ter=non-decision component; z=starting point; Bias=relative distance between starting point and boundaries (see text for details). Negative drift rates correspond to the “non-word” boundary in Exp. 1 and the “new” boundary in Exps 2 and 3. For a boundary separation of.10: drift rates of.1, .2, and .3 correspond to accuracy of .70, .85, and .93, respectively.