Perception Time

In most lines there is one unnecessary word. It is either grammatically incorrect or does not fit in with the sense of the text.

Getting older Telescopes your Perception of Time

1. Does your birthday seem to come around faster in in each year?
2. The common experience that time flies as you get older was
3. first noted more than a hundred years ago by the psychologist
4. William James. Now researchers have proved it that age really
5. does affect on your perception of time. They asked people in three
6. age groups to date the twenty major public events such as natural
7. disaster and political changes. The 18-21 age group who thought
8. the events had occurred more recently than they had to,
9. while the over-60s dated events too far back. The middle-aged
10. groups were the most accurate. These results are show that our
11. perception of time really it does depend on age, although no one
12. knows quite why this should be. One explanation for is that as
13. we get older we accumulate of generic memories of events such as
14. Christmas and holidays. Such a regular events may create the
15. impression of time is passing more quickly. Another explanation
16. is that we perceive time in relation to our own age - when you
17. are four, a year is a quarter of your life, but it's only a fortieth for a
18. 40-year-old.