Fig. 3.

Social context influences monkeys occupancy. Every panel displays the difference in occupancy for sessions with all four monkeys in the home cage (‘4in’), and three kinds of triplets where one of the other three monkeys was removed, therefore creating an effect of social context for the monkey under consideration in one of the four panels. A single data point has been computed by the absolute difference between normalized occupancies from two different sessions originating from the same subject, according to the following formula: mu(|NCn-NCm|), where NC is a 16 by 29 matrix of time spent in a given location normalized by total duration of a recording session. The black diamonds depict the mean for each group, and the asterisk indicates a condition that is different from the ‘4 in’condition.