Exposure to and experience of self-harm and self-harm related content: an exploratory network analysis

Kirtley, Olivia J., Hussey, Ian and Marzano, Lisa ORCID: https://orcid.org/0000-0001-9735-3512 (2021) Exposure to and experience of self-harm and self-harm related content: an exploratory network analysis. Psychiatry Research, 295 , 113572. pp. 1-8. ISSN 0165-1781 [Article] (doi:10.1016/j.psychres.2020.113572)

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Abstract

Exposure to the self-harm behaviour of others plays a role in individuals’ own self-harm thoughts and behaviours, but there has been little consideration of the broader range of mediums through which exposure to self-harm related content may occur. N = 477 participants completed an online study, including questions regarding lifetime history of self- harm thoughts and behaviours and the frequency with which they had been exposed to self- harm via various mediums. Gaussian Markov random field network models were estimated using graphical LASSO and extended Bayesian information criterion. Bootstrapping revealed that exposure mediums with a direct connection to self-harm thoughts and behaviours were the internet (rrp = .34, 95% CI [.26, .42]) and in-passing ‘miscellaneous’ exposure (rrp = .14, 95% CI [.00, .23]). However, stability of the network centrality was low (expected influence stability = 0.52). The node with the greatest increase in expected influence within the network was miscellaneous “in-passing” exposure. In-passing exposure is an understudied exposure medium. Our results may suggest new types of exposure mediums for future research. Data were cross-sectional, so temporal relationships between exposure and behaviour could not be determined. Low stability of the networks suggests that future similar studies would benefit from larger sample sizes.

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