Evaluating the Experiment from the Inside: Internal Validity An experiment's internal validity depends on whether
A)probability sampling was used.
B)researchers have correctly interpreted statistical tests.
C)the experiment is free of confounding.
D)the research findings can be extended to other samples and situations.

Question

Quizplus · Accepted Answer

Internal validity refers to whether the experiment accurately captures the relationship between the independent and dependent variables, without the influence of other variables. Confounding variables, which are extraneous variables that may affect the dependent variable and that are not under experimental control, can distort the results and reduce internal validity. Therefore, it is crucial for an experiment to be free of confounding to achieve high internal validity. While probability sampling and the generalizability of findings are also important considerations in research design, they are not directly related to internal validity. The correct interpretation of statistical tests is important for drawing accurate conclusions from data, but it does not guarantee internal validity.

Evaluating the Experiment from the Inside: Internal Validity an Experiment's