I would hold the APM results lightly, as well, but even taking them into consideration, I don't find them meaningfully divergent. First of all, examiners using the licensed APM typically report the results in %iles (which is what the publisher provides in the norm tables), so the IQ score must have been generated off-label, so to speak, by the examiner. Secondly, using an SD of 24, your score comes out to a z score of +3. Compare that to your WAIS-IV VCI, which comes out to a z score of +3.1. Hardly an earth-shattering difference. Matrices, which typically does correspond more closely to the APM (but not always), is at +2. Different, yes, but not, I would think, crazy different--and both are on pretty small sample sizes (23 items for APM, and likely in the high 20s, depending on which items you missed, on the WAIS). Matrices is also a subtest, rather than an index score, with less rigorous psychometric qualities (e.g., reliability) than the APM. Too bad you weren't given the optional Figure Weights subtest on the WAIS. In combination with Matrices, that would have provided a better picture of your nonverbal reasoning, especially in quantitative reasoning.
