The single-variable rule suggests that single-subject designs
A) should only have one participant at a time.
B) should add or withdraw one variable during any study phase.
C) should only conducted by a single researcher and not teams of researchers
D) Should be generalizable to only one participant at a time.

Question

Quizplus · Accepted Answer

The single-variable rule suggests that only one variable should be added, withdrawn, or manipulated in any given phase of a single-subject design study. This allows for clarity in determining the effects of the variable on the outcome, as opposed to multiple variables confounding the results.

The Single-Variable Rule Suggests That Single-Subject Designs