Which of the following best explains why US cities became segregated by culture and ethnicity in the late 1800s and early 1900s? Immigrants formed communities when they were shunned elsewhere.
City planners set aside neighborhoods for various ethnic groups.
Foreign governments set up colonies in American cities.
Government authorities forced immigrants to live in enclaves.

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.