F. CONTROLLING YOUR MIND
“ . . . according to attention restoration therapy, or ART, . . . when people aren’t being bombarded by external stimuli, their brains can, in effect, relax. They no longer have to tax their working memories by processing a stream of bottom-up distractions. The resulting state of contemplativeness strengthens their ability to control their mind. (219)
p.s. I prefer "contemplation" to Carr's term; I ma not sure his sentence needs the hyper-extended noun.