When individuals in a variety of different types of societies were asked to take part in experiments in which they played the Ultimatum and Dictator Games, researchers found a surprising amount of variation in the types of offers that were made and accepted or rejected. Most of the variation could be explained by ______.

The nonequivalent comparison-group design does NOT have which of the following?

a. Manipulation of the independent variable b. Random assignment of participants to the groups c. A pretest d. A posttest

The last time individuals within the foreign policy establishment would operate with a consensus and act in unison was in March 1968, when President Johnson convened a meeting of his major advisors and a group of senior policy advisors from outside the government, who were referred to as the _________, many of whom had held high-level government positions in previous administrations under

Presidents Truman, Eisenhower, and Kennedy, to discuss what to do about U.S. policy in Vietnam. a. "Wise Men" c. Council on Foreign Relations b. Joint Chiefs of Staff d. Heritage Foundation