Thorndike's Stanford-Binet data suggest that from 1932 to 1971-72 preschool children enjoyed greater IQ gains than older children, possibly due to the rise of television. Additional analysis indicated that gains were either due to sampling error or totally antedated 1947. Gains of 12 IQ points were found for Americans. (Author/EGS)

In an effort to determine whether intelligence and school readiness could be estimated from observin g behavior and if middle class Head Start teachers ranked highly those pupils whose behavior resembled middle class behavior, the behavior patterns of 36 Head Start pupils were compared with their teachers' ranking of perceived intelligence and…