Intelligence tests (often called IQ tests) most commonly used to diagnose a learning disability include the Wechsler Preschool and Primary Scale of Intelligence (WIPPSI), Wechsler Intelligence ...

There are many different kinds of IQ tests that use various equations to calculate IQ, but the fourth edition of the Wechsler Adult Intelligence Scale (WAIS-IV) is considered to be the gold ...

But he wasn't happy with the limitations of the Stanford-Binet so, in 1955, he published his new intelligence test known as the Wechsler Adult Intelligence Scale (WAIS). Wechsler developed two ...

Intelligence tests appeared in the early 20th century. The first attempts to measure mental abilities were made by the French psychologist Alfred Binet, who developed a test to identify children with ...

Across 14 countries where decades’ worth of average IQ scores of large swaths of the population were available, all had upward swings—some of them dramatic. Children in Japan, for example, gained an ...