Which statement about reciprocal altruism is most accurate?
a. Reciprocal altruism is a strictly human phenomenon and observed only in mature adults.
b. Reciprocal altruism is a strictly human phenomenon that has been observed throughout the lifespan.
c. Reciprocal altruism occurs in humans and non-human primates but not in non-primate animals.
d. Reciprocal altruism has been demonstrated in non-human primates as well as non-primate animals.
Question 2
Cross-cultural research indicates that North Americans are more likely than Asians to
a. perceive themselves as unique.
b. assume blame for failures.
c. strive for community belonging.
d. see themselves as others tend to see them.