What is a moderator?

What is a moderator?

• A. A variable that changes the direction or strength of a relationship; Not the causal result of the IV.
• B. A variable that explains the mechanism between the IV and DV.
• C. The dependent variable.
• D. An external confounder.

Answer: (A)

Moderation means a variable changes the strength or direction of the relationship between the independent variable and the dependent variable. It shows up when the effect of the IV on the DV depends on another factor, so the association is stronger, weaker, or even reversed at different levels of the moderator. It’s not explaining how the IV causes the DV (that role belongs to a mediator), and it’s not the outcome itself. For example, the link between stress and sleep quality might be stronger for people with low coping skills than for those with high coping skills, with coping style acting as a moderator. The moderator can be a categorical factor like gender or a continuous one like age.

Moderation means a variable changes the strength or direction of the relationship between the independent variable and the dependent variable. It shows up when the effect of the IV on the DV depends on another factor, so the association is stronger, weaker, or even reversed at different levels of the moderator. It’s not explaining how the IV causes the DV (that role belongs to a mediator), and it’s not the outcome itself. For example, the link between stress and sleep quality might be stronger for people with low coping skills than for those with high coping skills, with coping style acting as a moderator. The moderator can be a categorical factor like gender or a continuous one like age.