The vast majority of people in the United States have I.Q.s between 80 and , For instance, an adult with mental retardation may have trouble driving a car.
Bonobo or chimpanzee I.Q. scores are sometimes even quoted as high as 80 or 90, but those are childhood age-peer scores that correspond to adult I.Q.'s of.
IQ classification is the practice by IQ test publishers of labeling IQ score ranges with category . The Wechsler IQ tests for children and for adults are the most frequently used individual IQ tests in the English-speaking world and . 70–80, Border-line deficiency, sometimes classifiable as dullness, often as feeble- mindedness.
Read the classifications of low IQ scores and what exactly it means to have a low IQ. 70 to 79—Borderline mental disability; 80 to 89—Low average . How Does the Weschsler Adult Intelligence Scale Measure Intelligence.