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Dependent variables
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| Direction of first gaze |
The stimulus to which monkeys first orientedgaze post-stimulus onset |
Dichotomous (0 = neutral, 1 = aggressive) |
| Total duration of gaze |
Sum of all looking bouts toward each stimulus per trial |
Continuous |
| Latency to disengage first gaze |
Duration of the first looking bout towards each stimulus per trial |
Continuous |
|
Fixed explanatory variables
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|
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| Emotion state manipulation |
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| - Testing Condition |
Testing session was held either during a phaseof enrichment or following restraint for a veterinary inspection |
Dichotomous (0 = enriched, 1 = health-check) |
| Stimulus characteristics |
|
|
| - Face |
Stimuli were presented as aggressive - neutral face pairs |
Dichotomous (0 = neutral, 1 = aggressive) |
| - Aggressive Face Location |
Each stimulus was presented an equal number of timesin the left and right visual fields |
Dichotomous (0 = LVF, 1 = RVF) |
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Random variable
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|
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| Monkey Identity |
Seven monkeys took part |
Nominal |
