Moderation occurs when the relationship between two variables changes as a function of a third variable. Which term describes this scenario?

Moderation occurs when the relationship between two variables changes as a function of a third variable. Which term describes this scenario?

• A. Moderation
• B. Mediation
• C. Confounding
• D. Interaction

Answer: (A)

Moderation describes a situation where the relationship between two variables depends on a third variable—the moderator. In other words, the effect of X on Y is conditional on the level of the moderator, so the strength or even the direction of the relationship can change across different values of that third variable. For example, the impact of study time on exam scores might be stronger for students with high self-discipline than for those with low self-discipline. In data analysis, this is tested by including an interaction term between the predictor and the moderator; a significant interaction signals moderation. Mediation explains how X leads to Y through an intermediate variable, confounding is about a third variable biasing the X–Y link, and while an interaction term is the statistical representation of moderation, the phenomenon itself is best described as moderation.

Moderation describes a situation where the relationship between two variables depends on a third variable—the moderator. In other words, the effect of X on Y is conditional on the level of the moderator, so the strength or even the direction of the relationship can change across different values of that third variable. For example, the impact of study time on exam scores might be stronger for students with high self-discipline than for those with low self-discipline. In data analysis, this is tested by including an interaction term between the predictor and the moderator; a significant interaction signals moderation. Mediation explains how X leads to Y through an intermediate variable, confounding is about a third variable biasing the X–Y link, and while an interaction term is the statistical representation of moderation, the phenomenon itself is best described as moderation.