Research Has Shown That the Influence of Having People Look

Multiple Choice

Research has shown that the influence of having people look in a mirror

A) increased helpfulness.
B) decreased helpfulness.
C) increased helpfulness for those who thought they had done well on a test, but decreased helpfulness for those who thought they had done poorly on a test.
D) decreased helpfulness for those who thought they had done well on a test, but increased helpfulness for those who thought they had done poorly on a test.