Of the following, the best way to decrease the threat of pretest-treatment interaction is
A) lengthen the duration of the study.
B) decrease the sample size.
C) increase the significance level.
D) use an attitude scale for the pretest.

Question

Quizplus · Accepted Answer

Lengthening the duration of the study can help decrease the threat of pretest-treatment interaction by allowing more time for any effects of the pretest on participants to dissipate before the treatment effects are measured. This approach helps in ensuring that the observed effects are due to the treatment itself rather than the interaction between the pretest and the treatment.

Of the Following, the Best Way to Decrease the Threat