2. Social Changes
Low ranking monkeys
are a target of threatening
faces and gestures
Low ranked monkeys’
immune systems were “out
of Whack” due to social
stress
3. Health
Social stress caused
changes in gene
expression which could
cause worse health
By improving their social
rank they could improve
their health
4. Social Ranking
High ranking monkeys taunt
and threaten lower ones
Some monkeys fought to
prove their social rank