It is true that the authors make advances to the field of intellectual assessment, compared to the earliest contributors of the last century. However, their model still remains a suspect one, given that the tests they used are mere correlates of what we know occurs using cognitive neuropsychology. Better approaches need to be developed.

The PASS theory of intelligence brings together research from many places into a coherent theory. If this theory holds true, it may restore credibility to the field of intellectual assessment and offer promise for thousands of learning disabled individuals. Many currently used instruments for measuring intelligence are based on 100 year old ideas. Many of the newer ones have not lived up to their promise in practical terms of understanding and remediating learning disabilities. The far transfer of remediating deficits in successive processing to improvement in basic academic skills is exciting and warrants more research.