Russell Foster，an Oxford professor of neuroscience(神经系统科学)，tested the memory of 200 Monkseaton pupils at 9 am and 2 pm using pairs of words，and discovered a 9% improvement in the afternoon.Students correctly identified 51% of word pairs in the later session，compared with 42% in the morning.Tayler McCullough,15，one of the test subjects，said “The majority of students would welcome the extra hours in bed.I'm extremely hard to get up in the morning.One or two people like to get to school early，but most of us would be up for going in later.I'm sure it would make a big difference to our learning ability.”

　　Kelley is adamant that a change of school timetable will have a meaningful effect on exam performance.He wants his school's governors to approve his plan and put the new timetable in place before the opening of Monkseaton's new school building，the most technologically advanced in the country，in September.

　　Kelley hopes his latest idea will be just as successful.“We have to be practical.But this proves that，by starting later，children's learning improves，as does their health.”

　　Foster said，“This is preliminary(初步的)data，but what's exciting is that it matches more detailed studies carried out in Canada and the US.Teenagers get up late not because they are lazy but because they are biologically programmed to do so.”

　　[解题导语]　经过研究发现学生在下午的记忆效果更好，因而一位高中校长呼吁高中学校更改作息时间表，认为这样更加符合青少年的生物钟。

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