The basic assumption of human behavior
that economists make is that people:
care only about others.
make decisions on the basis of costs and benefits.
worry about how other people act.
have no control over their behavior,
which is totally determined by environment.
selection suggests that the
assumption of self-interest is most likely to be
in interactions among people who have
affection for one another.
when cooperation is evident.
in an economy based on socialism
rather than capitalism.
in interactions among anonymous strangers.