During the start of the replacement exercise in January, people also queued for the replacement though there was nine months to do so. Now the end of September, and the last day of free replacement, people once again queue up to change the cards. So where were the crowd during the remaining of the time?!
This phenomena can be explained by the Serial Position Effect. When people are asked to recall a list of words, they tend to recall words from the beginning and end of the list. The findings is illustrated in the graph below:
image taken from wikipedia
People tend to remember words from the front of the list(Primacy Effect) because they have more time to rehearse the words to themselves, allowing the words to go into long-term memory; People tend to remember words towards the end of the list(Recency Effect) because those words are still in the short-term memory. Collectively, the two effects are known as the Serial Position Effect.
How can this explain the queues? People who queued up during the January period are under the Primacy effect; people who queued up today are under the Recency effect. People tend to forget that they can actually exchange the cards during the months from February to August, though there were special booths set up for that purpose.
Conclusion:
It's amazing that people like to queue so much.
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