Table 1.
Model predictors, their definitions, type of predictor, and the levels or range of the predictor
| Predictor | Definition | Type | Levels/range |
|---|---|---|---|
| Stimuli durationa | Duration that the paired stimuli appeared for during a trial | NA | 100 ms, 1,000 ms |
| Test session | Session that the monkey was tested (factor) | Test | Baseline, A + 1d, A+ 3d, A + 7d, A + 14d |
| Trial type | Type of stimuli pair presented in trial (factor) | Test | Whole face stimuli, Scrambled stimuli |
| Congruency | Position of dot-probe in relation to the aggressive stimulus (factor) | Test | Congruent, Incongruent |
| Dot-probe position | Position of dot-probe on the touchscreen (factor) | Control | Left, Right |
| Trial number | Number of trial (covariate) | Control | Range: 4–164 |
| Time tested | Time (in minutes) from 12:00 that the monkey was tested (covariate) | Control | Range: 9–191 |
| Rank | Position in group hierarchy that the monkey was in (covariate) | Control | Range: 1–5 |
| Position preferred handb | Position of dot-probe in relation to the monkey's preferred hand (factor) | Control | Ipsilateral, Contralateral |
a
Data were separated by stimuli duration prior to fitting models.
b
Models including position preferred hand instead of dot-probe position were compared to the original models for the baseline test session in a post hoc analysis to investigate if this control predictor had more explanatory power.