The war in Iraq was justified on the grounds that regime change was necessary to fight against terrorism, according to George W. Bush

Whether the participants are smokers, and thus tolerant to the effects of nicotine, is an important extraneous variable. Dr. Benning could control for this variable by

a) using only non-smokers. b) making smoking status another independent variable. c) matching the participants in the groups on their smoking frequency distribution. d) all of the above

The role media played in revealing the National Security Administration's secret surveillance operation is an example of __________ journalism

a. new b. investigatory c. television d. gonzo