Multiple Choice
A study designed to investigate an increase in traffic accidents at five major intersections finds that road signs near all of the intersections were changed during the month before the increase in accidents was observed. Which of the following experimental designs was used to obtain the findings?
A) Ex post facto design
B) Crossover design
C) Longitudinal design
D) Cross-sectional design
Correct Answer:
Verified
Correct Answer:
Verified
Q2: A researcher is studying absorption rates of
Q3: A longitudinal design can often determine cause
Q4: A researcher wants to see if increased
Q5: Describe two threats to internal validity that
Q6: Which type of variable confuses the effect
Q8: A researcher would use between-groups design to
Q9: Randomization is one way researchers can control
Q10: Participants in trials of an experimental intervention
Q11: Following extensive research and examination of multiple
Q12: An epidemiological research study about influenza that