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What is Borderline Intellectual Functioning? Concept, Causes, Characteristics, Symptoms, Testing Methods, and Statistics

  • Borderline Intellectual Functioning is commonly known as having an IQ between 70-85. This accounts for approximately 14% of the entire population.
  • People with borderline intellectual functioning have lower cognitive abilities than average but are not classified as having intellectual disabilities, often finding themselves in an ambiguous position.
  • While they don't have intellectual disabilities, they may experience difficulties in daily life, learning, and social situations.

What is Borderline Intellectual Functioning?​

Borderline Intellectual Functioning refers to having an IQ between 70-85, which is below average intelligence but doesn't meet the criteria for intellectual disability (IQ below 70). This means they function somewhere between average intelligence and intellectual disability.

Causes of Borderline Intellectual Functioning​

The causes of borderline intellectual functioning are varied and not completely understood. However, possible causes include:

  • Genetic Factors: Genetic influences from parents or family
  • Environmental Factors: Unstable family environment, malnutrition, lack of educational opportunities during childhood
  • Brain Damage: Brain damage due to premature birth, hypoxia, accidents, etc.
  • Other Medical Conditions: Certain diseases or syndromes

Main Characteristics and Symptoms of Borderline Intellectual Functioning​

1. Slower Learning Speed​

People with borderline intellectual functioning learn more slowly than their peers. They may need more time and repetition to learn new concepts or skills.

2. Difficulty Understanding Abstract Concepts​

They may have difficulty understanding abstract concepts or complex problems. They are relatively good at simple and concrete tasks, but struggle with complex or abstract thinking.

3. Difficulties in Social Situations​

They may have difficulty reading social cues or interacting with others appropriately. This can lead to difficulties in forming friendships or maintaining relationships.

4. Lack of Self-Confidence​

They may lack self-confidence when comparing themselves to others. This can lead to increased anxiety or depression.

5. Academic and Occupational Difficulties​

They may experience lower academic achievement than peers or have difficulty finding suitable jobs. However, with appropriate support and education, they can lead successful lives.

Testing Methods for Borderline Intellectual Functioning​

To diagnose borderline intellectual functioning, professional psychological evaluation and IQ tests are necessary. Commonly used IQ tests include:

  • K-WAIS (Korean Wechsler Adult Intelligence Scale): IQ test for adults
  • K-WISC (Korean Wechsler Intelligence Scale for Children): IQ test for children
  • Other Cognitive Function Tests: Tests to evaluate memory, attention, problem-solving abilities, etc.

Statistics on Borderline Intellectual Functioning​

  • Prevalence: Borderline intellectual functioning accounts for approximately 14% of the entire population
  • IQ Range: 70-85
  • Comparison with Average IQ: The average IQ is 100, so people with borderline intellectual functioning are 15-30 points below average

Support and Treatment for Borderline Intellectual Functioning​

While borderline intellectual functioning is not a disorder that can be completely cured, quality of life can be improved through various support and education.

  • Special Education: Tailored education considering individual learning speed and abilities
  • Social Skills Training: Learning social interaction methods
  • Psychological Counseling: Building self-confidence and managing anxiety or depression
  • Vocational Training: Providing vocational training to find suitable jobs
  • Family Support: Support and understanding from family are important

Living with Borderline Intellectual Functioning​

People with borderline intellectual functioning can lead successful lives with appropriate support and understanding. While they may face difficulties in learning and social situations, they can find their own paths and live valuable lives. Understanding and acceptance from society are important.

Conclusion​

Borderline intellectual functioning refers to having an IQ between 70-85, which is an ambiguous position between average intelligence and intellectual disability. People with borderline intellectual functioning may experience difficulties in learning, social situations, etc., but with appropriate support and education, they can lead successful lives. Continuous interest and support from society are needed, and understanding and acceptance from family and friends are important.