What does borderline deficiency on IQ mean?

It means that the overall thinking and reasoning abilities exceed those of approximately only 5-7% of the general population. People with a borderline deficiency on IQ will function at an equivalent age of a young teenager. It is a very gray area, and professionals, teachers, families and even the authorities have difficulties in dealing with individuals that fall in to this category, as there is insufficient scientifically valid research in this area. In psychotherapy some studies have shown that Cognitive Behavioral Therapy is the best approach. In a school setting special accommodation is often necessary. Addictions, ADHD, promiscuity, and mood disorders have also been found to have a comorbidity with borderline IQ.