Term for commercials placed by an advertiser at stations of the advertiser’s choosing:

During the Exxon Valdez oil spill, Exxon CEO Lawrence G. Rawl was criticized because he ___

A) did not travel to Alaska and take charge of the cleanup B) waited a week before making a public comment C) came across on television as combative and poorly prepared D) A and C E) All of the above

When two different instruments are used to measure the dependent variable in an experiment, what potential threat to internal validity may occur?

a. Compensatory rivalry b. Instrumentation c. Treatment confound d. Statistical regression