What is IQ?
Intelligence Quotient (IQ) is a total score derived from a set of standardized tests or subtests designed to assess human intelligence. The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at the University of Breslau he advocated in a 1912 book.
Modern IQ scores are calculated as the ratio of a person's mental age to their chronological age, multiplied by 100. For example, a 10-year-old with a mental age of 12 would have an IQ of 120.
History
The history of IQ testing began in the early 20th century. The first practical intelligence test was developed by Alfred Binet and Théodore Simon in 1905, known as the Binet-Simon scale. It was originally designed to identify children who needed specialized educational assistance.
In 1916, Lewis Terman of Stanford University published the Stanford-Binet Intelligence Scales, which became the standard for IQ testing in the United States for many decades.
Methods
There are several widely recognized methods for measuring IQ, each focusing on different cognitive abilities:
- ✓ Stanford-Binet Intelligence Scales: Measures five cognitive factors: fluid reasoning, knowledge, quantitative reasoning, visual-spatial processing, and working memory.
- ✓ Wechsler Adult Intelligence Scale (WAIS): Assesses verbal comprehension, perceptual reasoning, working memory, and processing speed.
- ✓ Raven's Progressive Matrices: A non-verbal test that measures abstract reasoning and fluid intelligence through pattern completion.
FAQ
The average IQ score is 100. About 68% of the population scores between 85 and 115, which is considered the average range.
IQ Distribution & Score Guide
The Bell Curve: 68% of people fall within 85-115 IQ range.
| 130+ | Very Superior (Top 2%) |
| 120-129 | Superior |
| 90-109 | Average |
| < 70 | Cognitive Challenge |
How it Works
- 1 Answer Questions: Complete 30-40 pattern-based logical puzzles.
- 2 Neural Analysis: Our engine evaluates your processing speed and accuracy.
- 3 Detailed Report: Get a comprehensive breakdown of your cognitive strengths.