Wechsler Adult Intelligence Scale (WAIS): The Wechsler Adult Intelligence Scale is an individually administered intelligence test designed to measure an adult's intelligence quotient (IQ). It is one of the most widely used intelligence tests in the world.
Wechsler Intelligence Scale for Children (WISC): The Wechsler Intelligence Scale for Children is an individually administered intelligence test designed to measure the intelligence of children between the ages of 6 and 16 years old.
Wechsler Preschool and Primary Scale of Intelligence (WPPSI): The Wechsler Preschool and Primary Scale of Intelligence is an individually administered intelligence test designed to measure the intelligence of young children between the ages of 2 and a half to 7 years old.