A new study that took over 20 years to conduct shows that the amount of mentally stimulating content in a child's home — such as the number of books that are around — may predict the structure of the child's brain later in life.The results show that people who lived in enriched environments during childhood had thinner cortexes later in life. The cortex is the brain's outer layer, and studies have linked thinner cortexes with higher intelligence test scores.The findings underscore the importance … [Read more...]