Which rule states that the independent variable precedes the dependent variable in time?

Which rule states that the independent variable precedes the dependent variable in time?

• A. IV and DV Rule
• B. Sample Generalizability
• C. Authenticity
• D. Nuremberg War Crimes Trials

Answer: (A)

The important idea here is that establishing causality in research requires the cause to come before the effect in time. The factor you think of as the cause—the independent variable—is set or measured first, and then you observe the outcome—the dependent variable. This clear time order is what the IV and DV Rule captures: the independent variable precedes the dependent variable in time, which supports making a claim that changes in the IV can lead to changes in the DV. For example, if you’re studying whether amount of practice influences test scores, practice amount is the independent variable and is varied or recorded before you measure test performance, the dependent variable. The other options don’t describe this sequencing: they address different ideas (generalizing findings to a population, truthfulness or realism of data, or a historical event) rather than the temporal order that underpins causal reasoning.

The important idea here is that establishing causality in research requires the cause to come before the effect in time. The factor you think of as the cause—the independent variable—is set or measured first, and then you observe the outcome—the dependent variable. This clear time order is what the IV and DV Rule captures: the independent variable precedes the dependent variable in time, which supports making a claim that changes in the IV can lead to changes in the DV.

For example, if you’re studying whether amount of practice influences test scores, practice amount is the independent variable and is varied or recorded before you measure test performance, the dependent variable. The other options don’t describe this sequencing: they address different ideas (generalizing findings to a population, truthfulness or realism of data, or a historical event) rather than the temporal order that underpins causal reasoning.