Which of the following statements about the role of research procedures in external validity is TRUE?
A) Having two few levels of an independent variable can sometimes jeopardize the external validity of the research.
B) The artificiality of laboratory research affects ecological validity but not generalizability.
C) It is possible to have multiple operational definitions of dependent variables, but not of independent variables.
D) One advantage of non-laboratory research is that such studies only rarely have any artificial aspects to them.

Question

Quizplus · Accepted Answer

Having too few levels of an independent variable can sometimes limit the generalizability of the research findings to real-world situations, which is a key aspect of external validity. The other options are incorrect because artificiality affects both ecological validity and generalizability, it is possible to have multiple operational definitions for both independent and dependent variables, and non-laboratory research can still have artificial aspects to it.

Which of the Following Statements About the Role of Research