The term borderline intellectual functioning describes a group of people who function on the border between normal intellectual functioning and intellectual disability, between 1 and 2 standard deviations below the mean on the normal curve of the distribution of intelligence, roughly an IQ between 70 and 85.
Borderline intellectual functioning, previously called borderline mental retardation (in the ICD-8), is a categorization of intelligence wherein a person has below average cognitive ability (generally an IQ of 70–85), but the deficit is not as severe as intellectual disability (below 70).
Signs of Borderline Intellectual Functioning
Difficulty achieving independent living, executing daily life activities, and participating with others in social situations. Difficulty managing emotions and aggression, with moods swings and low frustration tolerance. Naiveté, gullibility, or poor common sense.
Background. Persons with a mild intellectual disability (MID; intelligence quotient (IQ) range 50–69) or borderline intellectual functioning (BIF; IQ range 70–85) are vulnerable for problems in different domains.
Diagnosing Intellectual Disability
A full-scale IQ score of around 70 to 75 indicates a significant limitation in intellectual functioning. However, the IQ score must be interpreted in the context of the person's difficulties in general mental abilities.
A person with this disorder can often be bright and intelligent, and appear warm, friendly and competent. They sometimes can maintain this appearance for a number of years until their defense structure crumbles, usually around a stressful situation like the breakup of a romantic relationship or the death of a parent.
The scans revealed that in many people with BPD, 3 parts of the brain were either smaller than expected or had unusual levels of activity. These parts were: the amygdala – which plays an important role in regulating emotions, especially the more "negative" emotions, such as fear, aggression and anxiety.
The symptoms of BPD are very broad, and some can be similar to or overlap with other mental health problems, such as: Bipolar disorder. Complex post-traumatic stress disorder (C-PTSD) Depression.
∎ 120 = potentially gifted (top 10%); average. for college graduates. ∎ 130 = borderline genius; eligibility for Mensa. (top 2%); average IQ of most PhD recipients.
But genetics can explain the wide range of possible IQs too because so many different genes are involved in developing and running a brain. It is possible, for example, to inherit all the higher IQ genes from each parent and leave the lower IQ ones behind. Now the child will be brighter than the parent.
Many people with BPD are deep thinkers, intuitive feelers, and many are intellectually gifted. Contrary to popular belief, most BPD sufferers are highly introspective and self-aware. With a process of healing and transformation, they can be the most empathic leaders and visionaries.
Scores of 80 to 89 are considered low average. Scores of 70 to 79 are considered borderline impaired. Scores of 55 to 69 are considered a mild impairment. Scores of 40 to 54 are considered a moderate impairment. Scores below 40 are considered an extreme impairment.
Full IQ scores of 70–84 indicate lower normal range IQ or borderline intellectual functioning [6].
Conclusions: Parental externalizing psychopathology and father's BPD traits contribute genetic risk for offspring BPD traits, but mothers' BPD traits and parents' poor parenting constitute environmental risks for the development of these offspring traits.
Individuals with Borderline Personality Disorder (BPDs) become overwhelmed and incapacitated by the intensity of their emotions, whether it is joy and elation or depression, anxiety, and rage. They are unable to manage these intense emotions.
BPD has been linked to the amygdala and limbic systems of the brain, the centres that control emotion and, particularly, rage, fear and impulsive automatic reactions.
Studies have also found that higher IQ is associated with more mental illness, including depression, anxiety, and bipolar disorder.
Bold – Impulsivity is a BPD trait that can be positively linked to being bold, courageous and having the ability to speak one's mind. Creative – The high intensity of emotions can be released into creative endeavours. Many people with BPD put their entire emotional expression into music, art, performance and writing.
Thoughts that seem to come out of nowhere can trigger intense distress and other BPD symptoms. This is particularly true for people who have BPD related to traumatic events like child abuse. A memory, location or image of a past experience of trauma or loss can bring about intense emotions.
Borderline intellectual functioning [1] or borderline mental deficiency is a condition concerning an individual's intellectual abilities. When individuals' cognitive ability is below average, they are classified as borderline intellectuals. In this problem, a person's IQ is 70-85.
Does an individual's IQ change with age? An individual's IQ does not change with age. In other words: if you did an IQ test now and then another one in 10 years' time, your IQ score will probably be very similar. This is because IQ is always measured relative to other people your age.