The textbook authors conducted two studies on social networking sites. The first study was conducted in the spring semester on college freshmen and the second study was conducted in the fall semester on college freshmen

A good operational definition of a research variable

A) specifies the type of statistical analysis to be employed. B) defines a variable on a consensual basis. C) defines the procedure so precisely that another researcher could easily perform the same procedure by following the description. D) defines the variable in terms of its frequency, duration, and intensity.

Which of the following best describes the arms race?

a. the rapid movements of world governments to arm and thereby protect Eastern European countries from attack by the Soviet Union in the wake of World War II b. a tense relationship between the United States and the Soviet Union in the 1950s and 1960s during which each side was striving to procure more weapons than the other c. the U.S. race in the early twenty-first century to prevent the spread of weapons of mass destruction to unstable governments d. the efforts to rapidly reduce the number of nuclear weapons held by the United States and the Soviet Union