Multiple Choice
A threat to internal validity that refers to the fact that the researcher knows the research hypothesis and thus causes an invalid confirmation of the research hypothesis is known as
A) a demand characteristic.
B) experimenter bias.
C) a placebo effect.
D) an informed experimenter effect.
Correct Answer:

Verified
Correct Answer:
Verified
Q2: A confounding variable is an example of
Q3: Manipulation checks are<br>A) used to determine if
Q4: Which of the following types of validity
Q5: Which of the following types of validity
Q6: A potential problem with random assignment to
Q7: Why would a researcher most likely use
Q8: In a study manipulating levels of aggression,
Q9: Which of the following is a possible
Q10: Extraneous variables<br>A) reduce power and increase the
Q11: A researcher found that conclusions regarding his