How come my IQ at 18 is 102, but when I was 9 years old my IQ was 157? Both of these tests were given by a professional.
Many people assume that their IQ is determined at birth and is therefore constant throughout their lives. However, our brains, especially during our formative years, are in a continuous process of neural production and pruning. The physical and intellectual stimulation provided by the environment plays a strong role in determining which neural connections are reinforced …