Quotes About Mental age

By 1908, the concept of mental level (later called mental age) had been developed, followed in a few years by a slightly more sophisticated concept, the intelligence quotient.

You know, there's chronological age, there's biological age, and there's psychological age. Chronological age, there's nothing you can do about, which is I'm 52. You set that number aside.

His parents called him Youngster. They did this in the subconcious hope that he might take the hint. Wensleydale gave the impression of having been born with a mental age of 47.

There's a reason I'm on a show called 'Younger,' because I still think... in every aspect of my life, I'm five or 10 years behind in my mind.