Lovejoy, JeremyJeremyLovejoyOsburn, RobertRobertOsburn2016-08-222016-08-222013 Elsev2013-05Advances in Mathematicshttp://hdl.handle.net/10197/7812Standard applications of the Bailey chain preserve mixed mock modularity but not mock modularity. After illustrating this with some examples, we show how to use a change of base in Bailey pairs due to Bressoud, Ismail and Stanton to explicitly construct families of q-hypergeometric multisums which are mock theta functions. We also prove identities involving some of these multisums and certain classical mock theta functions.enThis is the author’s version of a work that was accepted for publication in Advances in Mathematics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Advances in Mathematics (VOL 238, ISSUE#, (2013)) DOI: 10.1016/j.aim.2013.02.005.Mock theta functionsMixed mock theta functionsBailey pairsBailey chainRamanujans lost notebookPartitionsIdentitiesSeriesFormsSequencesRankJournal Article23844245810.1016/j.aim.2013.02.0052016-08-10https://creativecommons.org/licenses/by-nc-nd/3.0/ie/