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)blinding
B)a placebo
C)randomization
D)a control group
E)all of these

Question

Quizplus · Accepted Answer

This study lacks blinding (participants and researchers are aware of the soda consumption), a placebo (no inert substance is given to compare against soda), randomization (participants were not randomly assigned to different levels of soda consumption), and a control group (there's no group explicitly not consuming soda for comparison). All these elements are crucial for reducing bias and establishing causality in experimental designs.

A Columbia University Study Linked Soda Consumption to Behavior Problems