Lucky Number 7!

Seven is the magic number! Did you know you can hold an average of 7 pieces of information in your working memory? This is why it is easy to recall a phone number after you have repeated it several times. Experimentors have also discovered that if you chunk pieces of information together, such as remembering a list of numbers by double digits (instead of 7...9, remember 79), you can retain even more information in your working memory.