Answer:
that would be Hermione Granger
Explanation:
I believe the answer is: Reliability
Reliability in this context refers to the ability to provide consistent and accurate information in order to know the true difference before and after using the drugs, otherwise the data collected by Andrea would be inadmissible and it would mess up the whole research.<span />
When children acquire normal skills very slowly or develop a normal skill at an inappropriate age, this is referred to as developmental delay.
The psychologist would use the cross sectional method. Is a method of which the researcher uses subjects in the same time and uses these subjects for his or her research in which they compare them to obtain results. It could be seen above as the psychologist has two children who are needed to be compared in the same time. That is why it is considered that he or she uses the cross sectional method.
Im pretty sure it is false. they may have used it to try to cure the disease, but it could never have worked.
my apologies if its wrong