What does the finding of obsidian in the Franchthi Cave tell us about the hunter-gatherers that lived there? *
They were more sophisticated than other hunter-gatherers in Europe
They had contact with peoples living on islands to the south
Their caves extended deeper into the earth than most hunter-gatherer caves
O They were expert craftsmen who made obsidian tools

Recall that in one condition of the experiment conducted by stasser and titus (1985) about student council president candidates, all group members had access to the same information, and that in another condition, members had unique information that other group members didn't know. in the second (unshared information) condition, the group made a worse decision than in the first (shared information) condition. this occurred because groups seldom can agree on who is most expert. focus discussion on the information that all members know. often ignore dissenting opinions. avoid differences of opinion, given conformity pressures.