Adolescence is widely thought to be a time when the brain trims away excess neural connections, refining circuits through synaptic pruning. New research now suggests this view may be incomplete.

Teen cannabis use is linked to slower cognitive growth, especially memory, with THC as a likely contributor during key ...

Adolescents who will eventually experiment with marijuana score higher on behaviors of intelligence. Teens who were exposed ...

The largest US study to date on teen cannabis uses shows that cannabis use during adolescence may hinder cognitive improvement over time.

A study of more than 11,000 teens finds cannabis use tied to slower gains in memory, focus and thinking speed as well as ...

For decades, my colleagues and I advanced the premise that early substance use—nicotine, alcohol, or cannabis (or other addicting drugs)—interferes with critical maturation stages, particularly ...

(Willie B. Thomas/DigitalVision/Getty Images) A long-term study of more than 11,000 children and teens has linked ...

Teens who start using cannabis before age 15 are more likely to use the drug often later in their lives. They are also more likely to develop mental and physical health problems in young adulthood ...

A large longitudinal study found that teens who begin using cannabis show slower cognitive development across memory, ...

If you're struggling to get your teenager out of bed in the morning, you’ll be happy to know there’s a very good reason. Not only do teenagers need more sleep than adults, they also tend to want to ...

The national nonprofit’s training equips law enforcement officers to understand how youth perceive, process, and ...