AT WHAT point does adolescence end? Perhaps at the point when we start to go to bed progressively earlier rather than later and later.
The end of puberty, or sexual maturation, is well defined. It is the point when bones stop growing, at around age 16 for girls and 17.5 for boys. But for adolescence, the transition from childhood to adulthood, there is no clear endpoint.
“I don’t know of any markers for it,” says Till Roenneberg of the Centre for Chronobiology at the University of Munich in Germany. “Everyone talks about it but no one knows when adolescence ends. It is seen as a mixed bag of physical, psychological and sociological…
