Author Question: What can be said of a study in which there is a confounded factor? a. The study lacks internal ... (Read 55 times)

jazziefee · **on:** Jun 19, 2018

What can be said of a study in which there is a confounded factor?

a. The study lacks internal validity. c. both a and b
b. The study lacks external validity d. none of these

Question 2

When the controls of an experiment are lax and the experimenter's conclusion that the independent variable had an effect is not justified, the study lacks _____.

a. causal certainty c. a null hypothesis
b. internal validity d. external validity

AmberC1996 · **Reply #1 on:** Jun 19, 2018

Answer to Question 1

C
If there is a confound in an experiment, internal validity is compromised. Without internal validity, there can be no external validity.

Answer to Question 2

B
Internal validity depends on sufficient control of all factors in an experiment.