The technique of placing comparable subjects in all experimental groups in an attempt to control tor confounding variables is called ____.
A)assignment randomization
B)Holding a variable constant
C)matching
D)blocking

Question

Quizplus · Accepted Answer

Matching refers to the process of selecting subjects with similar characteristics (e.g., age, gender, ethnicity) and distributing them equally across all experimental groups to reduce the impact of potential confounding variables. Option A (assignment randomization) refers to randomly assigning subjects to experimental groups, which is a different technique of experimental design. Option B (holding a variable constant) involves keeping a variable at a constant level for all subjects and is not the same as matching. Option D (blocking) refers to dividing subjects into blocks based on a known or suspected confounding variable and then randomly assigning each block to an experimental group. Although blocking is also used to control for confounding variables, it is distinct from matching.

The Technique of Placing Comparable Subjects in All Experimental Groups