A political scientist using the rational-material approach is most likely to reference which of these concepts when explaining why the United States and the Soviet Union never directly fought each other?

What factor is going to be most important in the leadership's decision to appoint someone as a chair of a committee?

a. subject knowledge b. party loyalty c. support by both the majority and minority leaders d. seniority within the committee

Sanjay is studying whether his racism awareness program increases people's awareness of issues of race and ethnicity in his city. On Monday, he gives an attitude survey to his participants to gauge their awareness

On Tuesday through Thursday, he puts them through his program. On Wednesday, a local predominantly black church is firebombed and the KKK claims responsibility. On Friday, Sanjay gives his awareness survey again and finds awareness of racial issues has increased dramatically. This example illustrates the possibility of ________________ as a plausible rival hypothesis. a. history b. maturation c. regression artifact d. selection