**Question:** An IQ between 50 & 70 would be classified as what kind of mental retardation –

A. Mild mental retardation (borderline intellectual functioning)
B. Moderate mental retardation
C. Severe mental retardation
D. Profound mental retardation

**Correct Answer:**

**Core Concept:**
Mental retardation is a term used to describe a significant deficiency in intellectual functioning. Intelligence quotient (IQ) is a measure of an individual's cognitive abilities, with a normal IQ ranging from 90 to 110. Mental retardation is classified based on IQ scores:

1. Mild mental retardation (borderline intellectual functioning) is defined by an IQ between 55-69.
2. Moderate mental retardation is defined by an IQ between 40-54.
3. Severe mental retardation is defined by an IQ between 20-39.
4. Profound mental retardation is defined by an IQ less than 20.

**Why the Correct Answer is Right:**

An IQ between 50-70 falls under the category of moderate mental retardation. This is due to the classification of IQ scores into different levels of intellectual functioning:

- Mild mental retardation is represented by IQ 55-69, which is not the correct range for the question.
- Severe mental retardation is represented by IQ 20-39, which is also not the correct range for the question.
- Profound mental retardation is represented by IQ <20, which is not the correct range for the question. Therefore, an IQ of 50-70 falls within the moderate mental retardation category. **Why Each Wrong Option is Incorrect:** A. IQ 55-69 falls within the mild mental retardation category, not moderate. B. IQ 40-54 falls within the severe mental retardation category, not moderate. C. IQ 20-39 falls within the severe mental retardation category, not moderate. D. IQ <20 falls within the profound mental retardation category, not moderate. **Clinical Pearl:** Understanding the classification of mental retardation based on IQ is essential for healthcare professionals, especially psychiatrists, psychologists, and mental health professionals, as it helps them diagnose, develop treatment plans, and monitor the progress of patients with intellectual disabilities. By correctly identifying the level of intellectual functioning, healthcare professionals can provide appropriate interventions, such as educational programs, therapy, and support systems, to help individuals with mental retardation lead a better quality of life and achieve personal growth.