Because people who join Alcoholics Anonymous control their alcohol problems better than people who do not join,a researcher concludes that Alcoholics Anonymous is highly effective.What is a major limitation on this study?
A)The research had too many independent variables.
B)The research did not have a hypothesis.
C)The research did not have demand characteristics.
D)People were not randomly assigned to groups.

Question

Because people who join Alcoholics Anonymous control their alcohol problems better than people who do not join,a researcher concludes that Alcoholics Anonymous is highly effective.What is a major limitation on this study?​
A)The research had too many independent variables.
B)​The research did not have a hypothesis.
C)​The research did not have demand characteristics.
D)​People were not randomly assigned to groups.

Quizplus · Accepted Answer

The major limitation on this study is that people were not randomly assigned to groups. This means that there may be confounding variables that are affecting the results and it is unclear if the effectiveness of Alcoholics Anonymous is due to the program itself or other factors such as motivation or the support network gained through attending meetings. Without random assignment, it is difficult to draw definitive conclusions about the effectiveness of Alcoholics Anonymous.

Because People Who Join Alcoholics Anonymous Control Their Alcohol Problems