Wechsler Intelligence Scale

The Wechsler IQ test is a test that helps to measure cognitive abilities and intelligence. It has evolved over time, but the original Wechsler Intelligence Scales were developed by Dr. David Wechsler in 1939 and his initial test was the Wechsler-Bellevue Intelligence Scale. The tests were developed after Dr. Wechsler’s realization that existing intelligence tests for adults were merely adaptations of testing used for children, and had little validity for adults.

Over time the test evolved into three separate versions used for differing age groups. The Wechsler Adult Intelligence Scale (WAIS) is used for adults, while the Wechsler Intelligence Scale for Children (WISC) is used for children between the ages of 6 and 16. The Wechsler Preschool and Primary Scale of Intelligence (WPPSI) is used for children between the ages of 4 and 6.5. In some cases of intellectual disabilities, the WISC may be used to help clinicians understand the individual’s lowest level of knowledge.

Purpose of the Wechsler IQ Test

The most common purpose of the test is to identify intelligence and cognitive performance, which is often helpful in identifying intellectual disabilities in children and adults. Scores for the test range from 0 to 160. An average IQ would be considered someone who scores between 90 and 109, with 100 being the mean. To be considered of superior intelligence, one would need to score 130 or higher.

What Does the Wechsler Test Cover?

One of the things that made the Wechsler test so unique in its inception was Dr. Wechsler’s approach to understanding intelligence in terms of performance rather than capacity. While many earlier tests like the Stanford-Binet test focused heavily on language, so Wechsler’s test added separate scoring for what he considered Performance IQ. In the Wechsler approach Full-Scale IQ is derived from the combined scores of Verbal and Performance IQ. The WAIS test in its current form typically takes anywhere from 60 to 100 minutes to complete and covers four primary indexes of intelligence:

    • Verbal Comprehension
    • Perceptual Reasoning
    • Working Memory
    • Processing Speed

Why Do People Take IQ Tests?

For the better part of a century, humans have been trying to come up with better ways to understand and measure intelligence. There are many reasons why people take IQ tests like the Wechsler test. Sometimes it’s simply a matter of curiosity, in other instances, it may be a requirement to enter a private school or potentially join a club or group such as Mensa. Whatever your reason may be, you can utilize the intelligence testing on this site to get a rough idea of your own IQ and see just here your intelligence rates compared to the rest of mankind.