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Specifically, no prior brief MEMI has targeted generalized anxiety disorder (GAD). Moreover, although theories propose that MEMIs can boost executive functioning (EF), they have largely gone untested. Thus, this randomized controlled trial (RCT) aimed to address these gaps by assessing the efficacy of a 14-day smartphone MEMI (versus self-monitoring placebo [SMP]).<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924933823000020_sec2\" sec-type=\"methods\">\n\t    <jats:title>Method<\/jats:title>\n\t    <jats:p>Participants with GAD were randomly assigned to either condition (68 MEMI and 42 SMP). MEMI participants exercised multiple core mindfulness strategies and were instructed to practice mindfulness continually. Comparatively, SMP participants were prompted to practice self-monitoring and were not taught any mindfulness strategies. All prompts occurred five times a day for 14 consecutive days. Participants completed self-reports and neuropsychological assessments at baseline, posttreatment, and 1-month follow-up (1MFU). Piecewise hierarchical linear modeling analyses were conducted.<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924933823000020_sec3\" sec-type=\"results\">\n\t    <jats:title>Results<\/jats:title>\n\t    <jats:p>MEMI (versus SMP) produced greater pre-1MFU reductions in GAD severity and perseverative cognitions (between-group <jats:italic>d<\/jats:italic> = 0.393\u20130.394) and stronger improvements in trait mindfulness and performance-based inhibition (<jats:italic>d<\/jats:italic> = 0.280\u20130.303). Further, MEMI (versus SMP) led to more considerable pre- to posttreatment reduction in state-level depression and anxiety and more mindfulness gains (<jats:italic>d<\/jats:italic> = 0.50\u20131.13). Overall, between-treatment effects were stronger at pre-1MFU than pre- to posttreatment for trait-level than state-level treatment outcome measures.<\/jats:p>\n\t  <\/jats:sec>\n\t  <jats:sec id=\"S0924933823000020_sec4\" sec-type=\"conclusions\">\n\t    <jats:title>Conclusions<\/jats:title>\n\t    <jats:p>Preliminary findings suggest that the beneficial effect of an unguided brief MEMI to target pathological worry, trait mindfulness, and EF is modest yet potentially meaningful. Other theoretical and clinical implications were discussed.<\/jats:p>\n\t  <\/jats:sec>","DOI":"10.1192\/j.eurpsy.2023.2","type":"journal-article","created":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T11:32:36Z","timestamp":1673868756000},"source":"Crossref","is-referenced-by-count":31,"title":["A randomized controlled trial of a 14-day mindfulness ecological momentary intervention (MEMI) for generalized anxiety disorder"],"prefix":"10.1192","volume":"66","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2023-3173","authenticated-orcid":false,"given":"Nur Hani","family":"Zainal","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0873-1409","authenticated-orcid":false,"given":"Michelle G.","family":"Newman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"170","published-online":{"date-parts":[[2023,1,16]]},"reference":[{"key":"S0924933823000020_r50","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2288-13-150"},{"key":"S0924933823000020_r58","doi-asserted-by":"publisher","DOI":"10.1016\/j.jad.2017.04.046"},{"key":"S0924933823000020_r69","doi-asserted-by":"publisher","DOI":"10.1007\/s10608-010-9349-4"},{"key":"S0924933823000020_r78","volume-title":"European medical and biological engineering conference and nordic-baltic conference on biomedical engineering and medical physics; 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