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Using data collected from 210 smartphone users, we investigated the moderating effect of motivation to comply on the relationship between social influence, on the one hand, and perceived usefulness and perceived ease-of-use on the other hand. Also, based on the theory of critical mass, we investigated the moderating effect of the perceived critical mass on the relationship between perceived usefulness and perceived ease of use on the one hand, and actual usage on the other hand. The results showed a significant moderating effect of both motivation to comply and perceived critical mass. Theoretical and practical implications are discussed.<\/jats:p>","DOI":"10.4018\/ijthi.2018070102","type":"journal-article","created":{"date-parts":[[2018,4,16]],"date-time":"2018-04-16T09:08:01Z","timestamp":1523869681000},"page":"21-38","source":"Crossref","is-referenced-by-count":7,"title":["The Moderating Effect of Motivation to Comply and Perceived Critical Mass in Smartphones' Adoption"],"prefix":"10.4018","volume":"14","author":[{"given":"Abdou","family":"Illia","sequence":"first","affiliation":[{"name":"Eastern Illinois University, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Assion","family":"Lawson-Body","sequence":"additional","affiliation":[{"name":"University of North Dakota, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon","family":"Lee","sequence":"additional","affiliation":[{"name":"Eastern Illinois University, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gurkan I","family":"Akalin","sequence":"additional","affiliation":[{"name":"Eastern Illinois University, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"IJTHI.2018070102-0","doi-asserted-by":"publisher","DOI":"10.2307\/249577"},{"key":"IJTHI.2018070102-1","doi-asserted-by":"publisher","DOI":"10.1016\/0749-5978(91)90020-T"},{"key":"IJTHI.2018070102-2","author":"I.Ajzen","year":"1980","journal-title":"Understanding attitudes and predicting social behavior"},{"key":"IJTHI.2018070102-3","doi-asserted-by":"publisher","DOI":"10.1108\/10610420910949022"},{"key":"IJTHI.2018070102-4","doi-asserted-by":"publisher","DOI":"10.2307\/2392322"},{"issue":"2","key":"IJTHI.2018070102-5","first-page":"285","article-title":"The partial least squares approach to causal modeling: personal computer adoption and use as an illustration.","volume":"2","author":"D.Barclay","year":"1995","journal-title":"Technology Studies"},{"key":"IJTHI.2018070102-6","doi-asserted-by":"publisher","DOI":"10.1016\/j.im.2006.03.007"},{"key":"IJTHI.2018070102-7","unstructured":"Chin, W. 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