Which of the following statements is not true?
A) Extraneous variables refer to outside variables that are not part of the experiment.
B) Persons or objects receiving a treatment are said to be in an experimental group.
C) Persons or objects not exposed to a treatment are said to be in a control group.
D) Internal validity refers to whether the treatment really made the difference in the measurements obtained.
E) All of these are true.

Question

Quizplus · Accepted Answer

All the statements provided accurately describe concepts related to experimental design and research methodology. Extraneous variables are indeed those outside variables not intentionally studied within the experiment. The experimental group receives the treatment being tested, while the control group does not, allowing for comparison. Internal validity concerns whether the observed changes can be directly attributed to the treatment or intervention, rather than external factors.

Which of the Following Statements Is Not True