Multiple Choice
Suppose a researcher is performing an experiment on children. She tests the children on one level of the independent variable at the beginning of the school year, but cannot return to test the second level until mid-April, when the school year is almost completed. What threat to internal validity may be a problem?
A) History
B) Selection bias
C) Maturation
D) Experimenter bias
Correct Answer:
Verified
Correct Answer:
Verified
Q20: Which one of the following is not
Q21: Any factor that is associated with the
Q22: Which one of the following questions is
Q23: Milgram's famous study 1963) in which people
Q24: If people who drop out of study
Q26: Role demands are a source of<br>A) selection
Q27: Participants exhibiting evaluation apprehension will<br>A) perceive one
Q28: Outliers in an experimental data set pose
Q29: To ascertain the effect of wilderness survival
Q30: Students as a group tend to perform