(Scenario II) By randomly assigning participants to the heavy backpack condition or light backpack condition, the experimenters have:
A) reduced the likelihood that the participants will stay blinded to the research hypothesis.
B) minimized the influence of factors other than weight on their snack preference.
C) increased the external validity of the study.
D) ensured that weight alone caused the participants' snack preference.

Question

Quizplus · Accepted Answer

By randomly assigning participants to different conditions, the experimenters minimize the influence of confounding variables, ensuring that differences in snack preference are more likely due to the weight of the backpack rather than other factors.

(Scenario II) by Randomly Assigning Participants to the Heavy Backpack