You have decided to enlist the help of two high school science teachers in administering the test you are using for your research. When administering the test, Mr. Barnes instructs his students to...

You have decided to enlist the help of two high school science teachers in administering the test you are using for your research. When administering the test, Mr. Barnes instructs his students to “choose the correct answer” and Mrs. Fletcher instructs her students to “choose the best answer.” How might their differences in administration be a threat to your research?