Borderline

The Borderline range (IQ 70–79) sits between the Low Average range and the threshold for intellectual disability (typically defined as IQ below 70 with concurrent adaptive functioning deficits). About 6.7% of the population scores here — roughly 1 in 15 people.

The term "Borderline Intellectual Functioning" is used in clinical settings for scores in this range. Importantly, this is not the same as intellectual disability (previously called mental retardation). A score of 70–79 does not by itself constitute a diagnosis. Intellectual disability requires both a low IQ score and significant deficits in adaptive functioning.

People who score in this range often complete compulsory education with support, hold employment in a variety of fields, and live independently. Academic subjects requiring high abstraction — advanced mathematics, theoretical sciences — may be challenging, but this covers a limited range of human activities.

Many individuals in this range are not identified at all without formal testing. They navigate daily life without clinical support and without any formal diagnosis. The majority are indistinguishable in ordinary social and professional contexts.

Online IQ tests are significantly less accurate at the extremes of the distribution. If you scored 70–79 on AurorIQ or any online test, this result should be treated as approximate. A score this close to clinically significant thresholds should always be verified by a licensed psychologist using a standardised, proctored test such as the WAIS-IV.

Single scores can also be affected substantially by test anxiety, distraction, poor sleep, or unfamiliarity with test format. Retaking in optimal conditions is advisable.