Which element was not identified as part of President George H. W. Bush’s “new world order”?

Two potentially confounding factors in the interrupted time-series design are

A) maturation and testing effects. B) regression to the mean and selection. C) history and instrumentation. D) maturation and regression to the mean.

After coding, a researcher needs to

A) write the research paper. B) design a new trial. C) finish the research. D) clean the data.