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
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