Humans remember 4 things at a time

Psychologists that the University of Oregon say that the capacity of short-term memory is a strong predictor of an individual's IQ level and scholastic achievement. A study conducted by them has shown that an average person can think only about four items at a time, but people with high IQ levels can remember more articles. so have you done any experiment on yourself like this to identify whether you are normal. you can post the results and can share this to us may be we can help you in improving your memory