Magnetic resonance imaging (MRI) scans have revealed key changes in the brain's grey matter in a small group before they developed symptoms. The finding suggests tracking these changes overtime, combined with traditional assessments, could help doctors to predict illness. The research, published in BioMed Central Medicine, was carried out by the University of Edinburgh. For ten years, scientists followed 200 young people who were at a high risk of developing schizophrenia because two or more members of their family had already been diagnosed with the illness. They analyzed MRI scans of 65 of the 200 young people, taken on average 18 months apart. The researchers looked specifically for changes in grey matter. Eight of the 65 went on to develop schizophrenia on average 2.3 years after their first scan. What was the conclusion of the research?