Are you an expert puzzle solver? Test your IQ and problem-solving skills by solving this viral math puzzle in 3 seconds. Only ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

Psychologists administer IQ tests. Some psychologists don't test children younger than 4. Costs for testing can vary by the provider. Isla McNabb, a 2-year-old from Kentucky recently became the ...

Lawrence Whalley received funding from Scottish Government, Henry Smith Charity, BBSRC, MRC, Alzheimer's Research Trust, The Wellcome Trust. Many people object to intelligence tests. Some say IQ test ...

American IQ test scores have dropped during a recent 13-year period, a remarkable finding that runs counter to the well-established trend of increasing IQ scores throughout much of the 20th century.

Isla McNabb, a 2-year-old from Oldham County, recently became the youngest current member of American Mensa, a society for those with high IQs. She tested in the 99th percentile for the Stanford-Binet ...