Brain scans may replace SATs by 2032 according to research done in 1988 and 2007. In 1988, brain scans of volunteers solving problems found smarter people had more efficient brains. In 2007, intelligence was found to be distributed across the brain rather than one specific area. The goal of this research is to understand what makes some people smarter, not necessarily to replace the SAT, and this knowledge could potentially be used to increase intelligence.