mental

mental acuity

Irregular bedtimes may disrupt healthy brain development in young children, according to a study of intelligence and sleeping habits. ¶ Going to bed at a different time each night affected girls more than boys, but both fared worse on mental tasks than children who had a set bedtime, researchers found.

I don't mean all of your friends—only a small proportion—which, however, connects your circle with that deadly, idle, brainless bunch—the insolent chatterers at the opera,[…], the neurotic victims of mental cirrhosis, the jewelled animals whose moral code is the code of the barnyard—!

mental science

the distinction between physical things and mental ideas

mental hospitals

He is the most mental freshman I've seen yet.

That was a mental party last night.

mental telepathy