A Columbia University study linked soda consumption to behavior problems in children.Researchers examined data from a previous study that followed 2929 mother-child pairs.One survey asked about behaviors of the child and also about soda consumption.They found that the more soda the kids drank, the more behavior problems they had.What aspect of a well-designed experiment is absent from this study?
A)a control group
B)randomization
C)blinding
D)a placebo
E)all of these

Question

Quizplus · Accepted Answer

This study lacks several key aspects of a well-designed experiment, including a control group (to compare against children who don't consume soda), randomization (to evenly distribute confounding variables), blinding (to prevent bias in reporting or interpreting results), and a placebo (to control for the placebo effect).

A Columbia University Study Linked Soda Consumption to Behavior Problems