He had IQ scores of 80 and 78 during elementary school.
IQ scores have high predictive validity for individual differences in school achievement.
IQ scores also correlated with school achievement tests designed to measure knowledge of the curriculum.
IQ scores were sometimes described as the "best available predictor" of job performance.
IQ scores above this range have been reported in individuals with smaller genetic deletions.
IQ scores are used as predictors of educational achievement, special needs, job performance and income.
But do we get to these IQ scores through nature or nurture?
For the most part, adult IQ scores don't significantly increase over time.
Even low levels of lead are linked to lower IQ scores.
The overall IQ score is based on a combination of these two scales.