The activity of persuading policymakers to support an interest group's policy position is known as ______.

Which of the following would be the least capable of scientific investigation and thus would represent the worst potential research idea?

a. Which art form is the more valuable to society, paintings or music? b. Which is better to increase alertness, caffeine or nicotine? c. Which species can learn a particular maze better, rat or mouse? d. Which produces better learning, studying with or without music?

Evaluation research began and developed in which time period?

A. 1910–1920s B. 1930–1940s C. 1950–1960s D. 1970–1980s