The Wakefield study was criticized for having a small sample size, nonblind researchers, and it __________
A) lacked a control group
B) ignored that the children in the study were diagnosed with autism before they received their vaccines
C) ignored that the children in the study also had heart defects that may have come from the vaccines
D) included data from children that were not a part of the study
Answer: A
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Brian is a star high school athlete, who has recently exhibited severe mood swings and aggressiveness. An initial health screening also indicates that Brian has acne, excess body hair, and high blood pressure
Brian's symptoms are consistent with A) delayed puberty. B) sexual maturation. C) anabolic steroid use. D) excessive stimulant use.
A critic reviews a study and challenges the findings, pointing out that the subjects had reactivity and were aware of the experiment due to an obvious pretest. Is this challenge appropriate, and why or why not?
a) No, because the findings may still be applicable. b) No, because the findings are typically generalizable. c) Yes, because the findings lack external validity. d) Yes, because the findings have serious internal validity errors.