Journal of Mathematics Instruction, Social Research and Opinion
Vol. 4 No. 3 (2025): September

Effect of Group Guidance with Self-Affirmation on Students’ Body Image Dissatisfaction

Nakita Augydia Lesmana (Universitas Islam Negeri Sumatera Utara)
Nefi Darmayanti (Universitas Islam Negeri Sumatera Utara)



Article Info

Publish Date
27 Aug 2025

Abstract

Body image dissatisfaction is a significant issue affecting adolescents’ mental health, including lowered self-esteem and increased anxiety. This study aimed to examine the effectiveness of group guidance using the self-affirmation technique in reducing body image dissatisfaction among ninth-grade students at MTsS Mandurana Tanjung Botung, Padang Lawas Regency. A quantitative approach with a one-group pretest-posttest design was employed. Eight students were selected purposively based on high to very high levels of body image dissatisfaction. The intervention consisted of four group guidance sessions using self-affirmation techniques over two weeks. Data were collected using a validated body image dissatisfaction scale and analysed using the Wilcoxon Signed Rank Test with SPSS 26. The results showed that prior to the intervention, 88% of students were in the very high category and 12% in the high category. After the intervention, all students (100%) fell into the very low category. Statistical analysis indicated a significance value of 0.012 (<0.05) with an effect size of -0.89, categorised as large, indicating a very strong impact. In conclusion, group guidance with the self-affirmation technique is effective in reducing adolescents’ body image dissatisfaction and can be applied in school counselling services. This study provides a basis for developing psychological interventions for adolescents that integrate group support and self-affirmation.

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Journal Info

Abbrev

misro

Publisher

Subject

Humanities Education Languange, Linguistic, Communication & Media Mathematics Social Sciences

Description

The Journal of Mathematics Instruction, Social Research and Opinion (MISRO) is a peer-reviewed scholarly online journal. The MISRO is published in March, July, and November three times a year. The MISRO is a non-profit journal whose publication is free of charge. The articles should be original, ...