Recall that Solomon Asch (1951, 1956) asked participants to estimate the lengths of lines. In response to the incorrect answers
of others, some participants actually denied what their eyes saw. These studies provide evidence of normative social influence.
private acceptance.
informational social influence.
contagion.
Nubian traders supplied Egypt with animal skins, ivory, ostrich feathers, and beautiful woods from the African interior. Nubia traded gold from its desert mines for Egyptian wheat.