Dr once did a research project examining how test performance was influenced by the gender identity/presentation of the person administering the test. Dr research assistants once mistakenly
printed the research materials (including the test) on blue paper instead of white. To save paper, they used the
blue materials. Dr. Clarke later determined that the color of the paper influenced the results beyond the effect of
the gender identity/presentation of the test administrator, so she had to discard all of the participants who
received blue paper materials. The color of the paper in this example is:
O the independent variable
O the dependent variable
O a confound
a demand characteristic
o