sciencehabit writes: We all know that reading books can make you child smarter, but new research reveals it also makes her brain thinner. Scientists have found that the level of mental stimulation a child receives in the home at age 4 predicts the thickness of two regions of the cortex in late adolescence, such that more stimulation is associated with a thinner cortex. This thinning is actually good for the brain, as it trims unneeded synaptic connections (a process known as synaptic pruning), making information processing more efficient.
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