Chugani et al (2001) bring together several pieces of evidence, some of them from prior studies, to arrive at conclusions about structure–function interaction in brain development. Note that in this study decreased glucose metabolism in certain brain areas is the “structure”, and attentional and other difculties experienced by the children is the

“function”.

● Why did the researchers use two control groups?

● What is the role of knowledge from prior research in this study?