Changes

'''Intelligence testing''' began in an organized way in the early 20th Century with the Stanford-Binet test. The purpose was to form an estimate of a person's aptitude before investing time and money in their education, in the belief that aptitude or intelligence was a fixed quantity.  

'''Intelligence testing''' began in an organized way in the early 20th Century with the Stanford-Binet test. The purpose was to form an estimate of a person's aptitude before investing time and money in their education, in the belief that aptitude or [[intelligence]] was a fixed quantity.  

At the time these tests were developed, medical science and psychology were

At the time these tests were developed, medical science and psychology were