Evaluating Operational Definitions An experiment is internally valid if
A)differences in the dependent variable are caused by changes in the independent variable.
B)extraneous variables systematically vary with one or more of the independent variables.
C)the data are consistent with the theory underlying the experimental hypothesis.
D)the findings apply to situations that were not directly tested.

Question

Quizplus · Accepted Answer

Internal validity refers to the extent to which an experiment is able to conclude that the changes in the dependent variable were indeed caused by changes in the independent variable, and not due to extraneous variables or chance. Option A correctly states that an experiment is internally valid if differences in the dependent variable are caused by changes in the independent variable. Options B, C, and D do not directly relate to internal validity.

Evaluating Operational Definitions an Experiment Is Internally Valid If