If the obtained IQ scores will be used to meet or medically equal the IQ requirements
of listing 12.05 or 112.05, the intelligence test must meet the program requirements
for psychological tests described in DI 24583.050B . That is, the test must be individually administered, administered by a qualified
specialist, and standardized, and must meet contemporary psychometric standards for
validity, reliability, normative data, and scope of measurement.
In addition to the program requirements for psychological tests, intelligence tests
must have a mean of 100 and a standard deviation of 15 if the obtained scores will
be used to meet or medically equal the requirements of listing 12.05 or 112.05. All
intelligence tests published since 2003 (and most tests published prior to that time)
satisfy this requirement. In the rare case you encounter an older intelligence test
that used a different mean or standard deviation, contact your Regional Office for
Do not purchase intelligence tests that do not meet these programmatic requirements
except for nonverbal intelligence tests under limited circumstances. For more information
about nonverbal intelligence tests, see DI 24583.055I.3.
NOTE: These requirements apply to intelligence tests used to meet or medically equal the
IQ criteria of listing 12.05 or 112.05. For information about how to consider tests
that do not meet these requirements, see DI 24583.055H.