Which term refers to the accuracy of a study in showing the effect of the independent variable?

• A. External validity
• B. Internal validity
• C. Confounding variables
• D. Extraneous factors

Answer: (B)

The term that refers to the accuracy of a study in demonstrating the effect of the independent variable is internal validity. Internal validity assesses whether the study's design and methodology effectively isolate the independent variable's influence on the dependent variable. A study with high internal validity ensures that the observed changes in the dependent variable can be confidently attributed to manipulations of the independent variable, rather than other factors or distractions. This is crucial for establishing a cause-and-effect relationship in experimental research.

In contrast, external validity deals with the extent to which the findings of a study can be generalized to other settings, populations, or times. Confounding variables are factors that could potentially influence the dependent variable and distort the relationship being studied, while extraneous factors are any variables that are not controlled in the study but could affect the outcome. While all these concepts are essential to consider in research, internal validity specifically pertains to the reliability of the relationship between the independent and dependent variables within the study itself.