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Importantly, researchers have hypothesized that exposure to this content could be a risk for self-harm and suicide in vulnerable audiences. We tested this hypothesis using a two-wave US panel survey among young adults ( N\u2009=\u2009729). Analyses indicated that exposure to self-harm on Instagram was associated with suicidal ideation, self-harm, and emotional disturbance even controlling for exposure to other sources with similar content. As hypothesized, exposure to self-harm on Instagram at the first wave prospectively predicted self-harm and suicidality-related outcomes at the second wave 1\u2009month later. These findings provide evidence that such exposure can lead to contagion in vulnerable users. Implications are discussed.<\/jats:p>","DOI":"10.1177\/1461444819850106","type":"journal-article","created":{"date-parts":[[2019,5,28]],"date-time":"2019-05-28T02:26:50Z","timestamp":1559010410000},"page":"2422-2442","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":125,"title":["Effects of exposure to self-harm on social media: Evidence from a two-wave panel study among young adults"],"prefix":"10.1177","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1107-8682","authenticated-orcid":false,"given":"Florian","family":"Arendt","sequence":"first","affiliation":[{"name":"University of Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4730-1575","authenticated-orcid":false,"given":"Sebastian","family":"Scherr","sequence":"additional","affiliation":[{"name":"KU Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"Romer","sequence":"additional","affiliation":[{"name":"University of Pennsylvania, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2019,5,27]]},"reference":[{"key":"bibr1-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1111\/jcom.12056"},{"key":"bibr2-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1177\/0093650213482970"},{"key":"bibr3-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1027\/0227-5910\/a000529"},{"key":"bibr4-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1016\/j.socscimed.2019.04.007"},{"key":"bibr5-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1080\/13811118.2013.805642"},{"key":"bibr6-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1176\/ajp.142.5.559"},{"key":"bibr7-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1017\/S0033291717001751"},{"key":"bibr8-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1080\/17538068.2018.1436500"},{"key":"bibr9-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1027\/0227-5910\/a000325"},{"key":"bibr10-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1186\/s12888-017-1521-x"},{"key":"bibr11-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0155813"},{"key":"bibr12-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1007\/s10578-006-0040-7"},{"key":"bibr13-1461444819850106","doi-asserted-by":"publisher","DOI":"10.1080\/13811110490270985"},{"key":"bibr14-1461444819850106","unstructured":"Instagram (2018) Instagram Statistics. 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