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5. Interactive Contents

The biological working memory is the small amount of information that can be held in mind and used in the execution of cognitive tasks. For example, when someone tells you his phone number, the information can be kept in your mind for a few seconds so that you have time to write it down. Working memory is closely tied to intelligence. A study indicates that the working memory test is 3 to 4 times more accurate than the traditional IQ test in predicting grades in spelling, reading, and math (reference). To see how good your working memory is, try the following test. Most people can remember 5-8 digits.

Working Memory Test


1. Select the number of digits that you think you can remember.

2. Click on the "Test" button.

3. Digits will be displayed in the red square sequentially.

4. Write all digits below after the letter "W" appears, then click on the "Submit" button to see if you are correct.


How can a person still remember the previous digits while paying attention to subsequent digits? The biological working memory is equivalent to computer working memory. We know exactly where the computer working memory is stored, but the physical location of the mind remains a mystery. Many neuroscientists believe that the mind is a state of the nervous system. However, recent studies did not support this notion. According to the mind-body dualism advocated by René Descartes nearly four centuries ago, the mind is a different system from the nervous system although they could interact with each other. There is evidence suggesting that the mind could be a physical system composed of gravitational and electromagnetic waves produced by brain activity (learn more).