The Concepts subtest of the National Intelligence Tests is analogous to Similarities of the Stanford-Binet Tests.
The Abstractness of words in the Concepts subtest of the NIT correlates with the item presentation order (r =. 609).
The Flynn Effect is more evident in the Concepts subtest than it is in the other NIT subtests.
If word familiarity is controlled, then word abstractness can predict the results of the Concepts.