The WAIS age range statement: The maximum age is 90 years and 11 months; which option states this range correctly?

The WAIS age range statement: The maximum age is 90 years and 11 months; which option states this range correctly?

• A. 16-90 years
• B. 16-90 years and 9 months
• C. 16-90 years and 11 months
• D. 16-91 years

Answer: (C)

The important point is the exact age range the WAIS is designed for. The test is intended for people from 16 years old up to 90 years and 11 months old, with both ends inclusive. That means someone who is 90 years and 11 months can be tested, but once a person reaches 91, they’re outside the range. The upper bound must reflect those additional months, not stop at 90 or extend to 91. Therefore, the correct range is 16-90 years and 11 months.

The important point is the exact age range the WAIS is designed for. The test is intended for people from 16 years old up to 90 years and 11 months old, with both ends inclusive. That means someone who is 90 years and 11 months can be tested, but once a person reaches 91, they’re outside the range. The upper bound must reflect those additional months, not stop at 90 or extend to 91. Therefore, the correct range is 16-90 years and 11 months.