One thing is certain about teenagers：Things changeported that a person's IQ may rise or fall and regions of the brain may change during the teenage years.

　　An IQ measures a person's ability to think and reason.Many researchers have believed it never alters for a person.If that were true，then your IQ at 10 would be the same as your IQ at 40.The new study shows it is not the case.A person's IQ can change，Richard Haier said.Haier，a brain researcher at the University of California，Irvine，called the new results“extremely interesting”．

　　Brain researcher Cathy Price，who teaches at University College London，designed an experiment to know about the mysteries of how teenagers think.In 2004，she and her colleagues tested the IQs of 33 teens who ranged from 12 to 16.At the same time，the scientists took pictures of the teens' brains using MRI.An MRI produces images of the brains using radiation and a powerful magnetic field.

　　A few years later，in 2007 and 2008，the participants returned to the lab.Like the first time，the scientists tested the teens' IQs and used an MRI to see their brains.But when Price compared the old and new results，she was shocked.Many of the teenagers' IQs had changed greatly over the years.One person had lost 18 IQ points；another had gained 21.Some people with high IQs on the first test had even higher IQs on the second.And some low­scoring individuals saw their scores fall even further.hat did the brain researchers mainly report recently?

【2017届高考英语一轮选修模块复习训练：选修6 Unit 3《A healthy life》（新人教版含解析）】相关文章：

★ 2017高考四川省广安市英语阅读理解一轮系列训练：20（含解析）

★ 2017届高考英语二轮复习课时训练：12（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第9组（含解析）

★ 【三维设计】2017版（江苏专用）二轮复习练习：选修8 Unit 4《Films and film events》单元检测（含解析）

★ 【北京专用】2014届高考英语一轮复习方案课时作业：必修1 Unit 4 Earthquakes

★ 【三维设计】2017版（江苏专用）二轮复习练习：必修3 Unit 1《The world of our senses》单元检测（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (37)

★ 【三维设计】2017版（江苏专用）二轮复习练习：选修8 Unit 3《The world of colours and light》课时跟踪检测A卷（含解析）

★ 2014届高考英语一轮复习课时作业(十八)必修3Module 6《Old and New》（外研版）

★ 【浙江专用】2014届高考英语一轮复习课时作业(十五)必修3Unit 5《Canada—“The True North”》