Wasnât the IQ test meant to summarize childrenâs unchangeable intelligence? In fact, no. Binet, a Frenchman working in Paris in the early twentieth century, designed this test to identify children who were not profiting from the Paris public schools, so that new educational programs could be designed to get them back on track. Without denying individual differences in childrenâs intellects, he believed that education and practice could bring about fundamental changes in intelligence. Here is a quote from one of his major books, Modern Ideas About Children, in which he summarizes his work with hundreds of children with learning difficulties:
A few modern philosophers . . . assert that an individualâs intelligence is a fixed quantity, a quantity which cannot be increased. We must protest and react against this brutal pessimism. . . . With practice, training, and above all, method, we manage to increase our attention, our memory, our judgment and literally to become more intelligent than we were before.
Whoâs right? Today most experts agree that itâs not either-or. Itâs not nature or nurture, genes or environment. From conception on, thereâs a constant give-and-take between the two. In fact, as Gilbert Gottlieb, an eminent neuroscientist, put it, not only do genes and environment cooperate as we develop, but genes require input from the environment to work properly.