Is it true that IQ remains the same after age 5? In reviewing my daughter’s school psycho-educational assessment reports, she’s received two pretty different IQ scores. The Wechsler Intelligence Scale for Children was used at age 11: score of 87. And the Stanford-Binet Intelligence Scale was used at age 17: score of 70.
Would two different types of tests produce two different scores? If so, how can we know at what level she is truly performing?
IQ tests measure basic intellectual abilities. However, parts of these tests also measure skills that are expected to be present at specific ages. Also, the format for the Wechsler and the Binet is different, possibly measuring different basic skills/abilities. I would suggest that you sit down with the psychologist who did the most recent testing and ask this professional to clarify the differences in IQ scores.