different edition mcat books

[yalla22]

Do various editions of a given mcat book contain different practice tests? Or from experience, are they the same test but just updated in presentation style..

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[MeowMix]

In general, no one writes all-new tests because it is so expensive and time-consuming to do so. They will update for format changes and topic shifts from year to year, but not rewrite the whole test unless they absolutely have to.