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Updated: Aug 31, 2025

Validation of a Psychosocial Intervention on Body Image in Older People: An Experimental Design
Published on: May 31, 2021
Is it safe? Exploring positive and negative outcome changes following a web-based intervention for adolescents
Johanna Kling1, Deniz Zelihić1, Heidi Williamson2
1Centre for Rare Disorders, Oslo University Hospital, Norway.
Abstract:
Despite the importance of making sure that psychological interventions are safe, research including both positive and negative effects of novel internet-delivered support is scarce. The aim of our study was to explore whether, and in what way, a new intervention for adolescents distressed by a visible difference (YP Face IT; YPF, Norwegian version) led to positive and/or negative outcome changes. Participants were 79 adolescents (62.00% girls; Mage = 13.84, SD = 1.73), with a visible difference. All had access to the YPF programme and answered questionnaires assessing social anxiety and body esteem pre- and post-intervention. Analyses included calculations of statistical as well as clinically significant and reliable changes. Results showed that fewer participants reported clinical levels of social anxiety and low body esteem after access to YPF. Results also indicated that participants who had a positive pre- to post-intervention change had lower levels of perceived self-worth pre-intervention, and spent more time on the intervention than those with a negative pre- to post change. Three participants showed a clinically significant negative and reliable change in social anxiety or body esteem from pre- to post-intervention. However, based on an examination of these participants' characteristics, preliminary findings support the safety of YPF.
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