"Third, your memory changes over time. It also changes the more you retell the story. Documented cases have shown eyewitnesses adding detail to testimony that could not have been known at the time of the event. Research has also shown that the more a witness's account is told, the less accurate it is. You may have noticed this yourself. The next time you are retelling a story, notice what you add, or what your brain wants to add, to the account. You may also notice that you drop certain details from previous tellings of the story."
This paragraph talks about how when you tell stories from your memory it tends to change over time. A supporting detail is that witnesses have proved that stories from your memory changes over time.
the fourth paragraph describes situation in which your memory may change overtime while re-accounting an event. it is also the first sentence of the paragraph, and this passage uses a style in which the claim is stated at the beginning of each paragraph.
