In a Within-Subjects Experiment Comparing Two Treatments, the Researcher Is

Multiple Choice

In a within-subjects experiment comparing two treatments, the researcher is concerned that the results may be confounded by outside events that occur between the first and second treatments. One way to reduce the likelihood that internal validity will be influenced by an outside event is to ____.

A) switch to a between-subjects design
B) increase the amount of time between the two treatments
C) switch the order of treatments
D) decrease the intensity of the treatment