The article by Pat Murphy and Paul Doherty starts with a small experiment. There are two set of words that the reader is asked to read and then write down the ones that he remembers. First set has words like sugar, honey, chocolate, sweet. The second set has emotion, hate wrath, enrage. Later when the results are compared, it is found that most people falsely remember the word sweet for the first group, and angry for the other group, even though these words don't exist on the list.
The reason is that human memory is associative and thinking about one thing can get you thinking related thoughts. Relative experiments are described through out the article. In some cases, people remembered made up events or falsely accuse the wrong person as being the rapist.