Figure 3
Responses during the Human Intruder Test. (a) Tendency to be present at the front of the cage (scored as the presence of the monkey’s head in the front or rear half of the cage) across condition for each group. Individually-housed monkeys spent less time at the front of the cage than socially-housed monkeys during stare near. (b) Affective reactivity (combined frequency of affective behaviors) across condition for each group. Groups did not differ significantly across conditions. (c) Affectivity reactivity difference scores (stare near–stare far) for each group. Individually-housed monkeys had significantly higher difference scores than socially-housed monkeys. Means ± adjusted 95% confidence intervals and individual data are shown.
