The Text Suggests That in the Hypothetical SIRD Stereogram Study

Multiple Choice

The text suggests that in the hypothetical SIRD stereogram study, the image could be placed in only one quadrant of the stereogram and subjects could be asked to indicate that quadrant when they reported detection. The purpose of this procedure would be to

A) allow counterbalancing.
B) prevent confounding of variables.
C) improve subjects' response times.
D) increase the validity of the independent variable.
E) increase the validity of the dependent variable.