Measurement of Intelligence

Overview

Measurement of intelligence is a foundational topic in Child Development and Pedagogy that directly impacts how teachers identify, assess, and support learners with varying cognitive abilities. For Assam TET, this topic connects closely with inclusive education practices, understanding individual differences, and identifying children with special needs—all critical competencies for elementary and upper primary teachers.

The concept of Intelligence Quotient (IQ) and various intelligence tests form the backbone of psychological assessment in educational settings. Teachers must understand both the utility and limitations of these measures to avoid labelling children unfairly and to use assessment data constructively. Expect questions on IQ calculation, types of intelligence tests, names of prominent tests, and their appropriate use in schools.

Mastering this topic requires understanding the historical development of intelligence testing, the mathematical basis of IQ, classification of tests by administration type, and the practical implications for classroom teaching in diverse Assam classrooms.

Key Concepts

• **Intelligence Quotient (IQ)** is a standardised score derived from intelligence tests, originally calculated as the ratio of mental age to chronological age, multiplied by 100. Modern tests use deviation IQ based on statistical distribution.

• **Mental Age (MA)** refers to the level of intellectual functioning compared to the average performance of children at different ages. A child with MA of 10 performs intellectually like an average 10-year-old.

• **Chronological Age (CA)** is the actual age of the child in years and months from birth.

• **Normal distribution of IQ** means most people score near the average (IQ 100), with fewer people at extremely high or low ends. About 68% of the population scores between IQ 85 and 115.

• **Individual tests** are administered one-on-one by trained psychologists and provide detailed, reliable assessment but are time-consuming and expensive.

• **Group tests** can be administered to many people simultaneously, are cost-effective for screening, but provide less detailed information about individual functioning.

• **Verbal tests** rely heavily on language skills and may disadvantage children from different linguistic backgrounds—a crucial consideration in multilingual Assam.

• **Non-verbal and performance tests** use pictures, patterns, and object manipulation, making them more culture-fair and suitable for children with language difficulties or hearing impairment.